CN114900899A - PDCCH resource allocation method, device, electronic equipment and storage medium - Google Patents

PDCCH resource allocation method, device, electronic equipment and storage medium Download PDF

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CN114900899A
CN114900899A CN202210681745.3A CN202210681745A CN114900899A CN 114900899 A CN114900899 A CN 114900899A CN 202210681745 A CN202210681745 A CN 202210681745A CN 114900899 A CN114900899 A CN 114900899A
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rnti
pdcch resource
terminal
pdcch
resource allocation
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CN114900899B (en
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曹慧
梁柏青
伍彦文
董方维
杨国刚
黄云飞
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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Abstract

The disclosure provides a PDCCH resource allocation method, a PDCCH resource allocation device, electronic equipment and a storage medium, and relates to the technical field of communication. The method comprises the following steps: acquiring Radio Network Temporary Identifier (RNTI) information distributed when a plurality of terminals access a network respectively; the method comprises the steps that RNTI groups to which each terminal belongs are determined according to RNTI information of each terminal and a plurality of RNTI groups configured in advance, wherein different RNTI groups correspond to different PDCCH resource candidate sets; and performing PDCCH resource allocation on each terminal according to the RNTI grouping to which each terminal belongs. According to the method and the device, the RNTI grouping corresponding to different aggregation levels of different time slots is configured, and then the PDCCH resource allocation is carried out on each terminal according to the RNTI grouping of each terminal under different aggregation levels of different time slots, so that the resource allocation efficiency can be improved.

Description

PDCCH resource allocation method, device, electronic equipment and storage medium
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a PDCCH resource allocation method, apparatus, electronic device, and storage medium.
Background
The PDCCH (Physical Downlink Control Channel) is used for carrying Downlink Control information (including Downlink scheduling information, power Control information, and the like), plays an important role in the communication system, and is necessary and prerequisite for correct information transmission at the receiving end and the sending end of the communication system. Because the transmission bandwidth of the PDCCH may include multiple PDCCHs simultaneously, in order to more effectively configure the time-frequency resources occupied by the PDCCHs, the protocol defines a control channel resource unit: RE Group (RE Group) and CCE (Control Channel Element), PDCCH resource allocation with CCE as basic granularity. A UE (user equipment, also called a terminal) attempts to decode DCI (Downlink Control Information) in a PDCCH by blind search of a search space. Therefore, PDCCH resource allocation requires finding out the idle CCE resource position in a determined time-frequency resource region and a determined search space. The PDCCH resource allocation scheme provided in the related art includes a large number of redundant computations, resulting in low DCCH resource allocation efficiency.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure provides a PDCCH resource allocation method, apparatus, electronic device and storage medium, which at least to some extent overcome the technical problem of low allocation efficiency of PDCCH resource allocation schemes provided in the related art.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows, or in part will be obvious from the description, or may be learned by practice of the disclosure.
According to an aspect of the present disclosure, there is provided a PDCCH resource allocation method, including: acquiring Radio Network Temporary Identifier (RNTI) information distributed when a plurality of terminals access a network respectively; the method comprises the steps that RNTI groups to which each terminal belongs are determined according to RNTI information of each terminal and a plurality of RNTI groups configured in advance, wherein different RNTI groups correspond to different PDCCH resource candidate sets; and performing PDCCH resource allocation on each terminal according to the RNTI grouping to which each terminal belongs.
In some embodiments, before determining the RNTI group to which each terminal belongs according to the RNTI information of each terminal and a plurality of preconfigured RNTI groups, the method further includes: acquiring the number of Control Channel Elements (CCEs) contained in a PDCCH resource to be allocated and one or more aggregation levels supported by the PDCCH resource to be allocated; and determining an RNTI grouping corresponding to each aggregation level according to the number of CCEs contained in the PDCCH resource to be allocated and one or more aggregation levels supported by the PDCCH resource to be allocated.
In some embodiments, the RNTI packet corresponding to each aggregation level is determined by the following formula:
Figure BDA0003696526420000021
for CSS:
Figure BDA0003696526420000022
for the USS:
Figure BDA0003696526420000023
and Y is p,-1 ＝n RNTI ≠0；
Wherein L represents an aggregation level of PDCCH resources;
Figure BDA0003696526420000024
indicating a time slot
Figure BDA0003696526420000025
A corresponding random quantity;
Figure BDA0003696526420000026
indicating a time slot
Figure BDA0003696526420000027
A corresponding random quantity; a and D represent natural numbers;n CI representing a carrier indication value; s represents a search space index; m represents the number of PDCCH resource candidate sets,
Figure BDA0003696526420000028
Figure BDA0003696526420000029
indicates the corresponding carrier n when the aggregation level is L CI The number of PDCCH candidate sets;
Figure BDA00036965264200000210
to represent
Figure BDA00036965264200000211
Maximum value of (d); mod represents an ceiling function; n is a radical of CCE,p Representing the number of CCEs contained in the control resource set p; i denotes a CCE index.
In some embodiments, determining an RNTI group to which each terminal belongs according to the RNTI information of each terminal and a plurality of RNTI groups configured in advance includes: and inquiring the RNTI grouping which each terminal belongs to under different aggregation levels under each time slot according to the RNTI information of each terminal.
In some embodiments, the PDCCH resource allocation for each terminal according to the RNTI group to which each terminal belongs includes: acquiring RNTI groups of each terminal under different aggregation levels; and according to the determined aggregation level, sequentially allocating a PDCCH resource candidate set of the RNTI grouping corresponding to the corresponding aggregation level to each terminal which is not allocated with the PDCCH resource.
In some embodiments, sequentially allocating, according to the determined aggregation level, a PDCCH resource candidate set of RNTI packets corresponding to the corresponding aggregation level to each terminal to which a PDCCH resource is not allocated, includes: judging whether the positions of the PDCCH resource candidate sets of the RNTI grouping corresponding to the current aggregation level are all occupied or not; if not, sequentially allocating the PDCCH resource candidate sets of the RNTI groups corresponding to the corresponding aggregation levels to each terminal which is not allocated with PDCCH resources according to the PDCCH resource candidate sets of the RNTI groups corresponding to the current aggregation levels; and if so, changing the aggregation level, and sequentially allocating the PDCCH resource candidate sets of the RNTI grouping corresponding to the corresponding aggregation level to each terminal which is not allocated with PDCCH resources according to the PDCCH resource candidate sets of the RNTI grouping corresponding to the changed aggregation level.
In some embodiments, allocating, in turn, a PDCCH resource candidate set of RNTI packets corresponding to respective aggregation levels for each terminal to which PDCCH resources are not allocated includes: determining an RNTI group to which the terminal belongs according to the aggregation level; RNTI grouping correspondence to which read terminal belongs
Figure BDA0003696526420000031
Taking the value of (A); to be read
Figure BDA0003696526420000032
Substituting the values of (A) into the following formula
Figure BDA0003696526420000033
CCE position calculation is carried out, resource allocation attempt is started, and whether the result of the attempt is successful or not, the CCE position calculation is carried out
Figure BDA0003696526420000034
Adding 1 to the value of (2), and repeating the resource allocation attempt until the resource allocation is successful or the values of the RNTI grouping under all aggregation levels are attempted:
Figure BDA0003696526420000035
for CSS:
Figure BDA0003696526420000036
for the USS:
Figure BDA0003696526420000037
and Y is p,-1 ＝n RNTI ≠0；
Wherein L represents an aggregation level of PDCCH resources;
Figure BDA0003696526420000038
indicating a time slot
Figure BDA0003696526420000039
A corresponding random quantity;
Figure BDA00036965264200000310
indicating a time slot
Figure BDA00036965264200000311
A corresponding random quantity; a and D represent natural numbers; n is a radical of an alkyl radical CI Representing a carrier indication value; s represents a search space index; m represents the number of PDCCH resource candidate sets,
Figure BDA00036965264200000312
Figure BDA00036965264200000313
indicates the corresponding carrier n when the aggregation level is L CI The number of PDCCH candidate sets;
Figure BDA00036965264200000314
to represent
Figure BDA00036965264200000315
Maximum value of (d); mod represents an ceiling function; n is a radical of CCE,p Representing the number of CCEs contained in the control resource set p; i denotes a CCE index.
In some embodiments, the current aggregation level and the changed aggregation level are both aggregation levels supported by the PDCCH resource to be allocated, and the current aggregation level is greater than the changed aggregation level.
According to another aspect of the present disclosure, there is also provided a PDCCH resource allocation apparatus, including: the RNTI information acquisition module is used for acquiring RNTI information of radio network temporary identifiers distributed when a plurality of terminals access to a network respectively; the RNTI grouping module is used for determining RNTI groups to which each terminal belongs according to RNTI information of each terminal and a plurality of RNTI groups configured in advance, wherein different RNTI groups correspond to different PDCCH resource candidate sets; and the resource allocation module is used for performing PDCCH resource allocation on each terminal according to the RNTI grouping to which each terminal belongs.
According to another aspect of the present disclosure, there is also provided an electronic device including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform any one of the above PDCCH resource allocation methods via execution of the executable instructions.
According to another aspect of the present disclosure, there is also provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the PDCCH resource allocation method of any one of the above.
According to the PDCCH resource allocation method, the device, the electronic equipment and the storage medium provided by the embodiment of the disclosure, a plurality of RNTI groups and PDCCH resource candidate sets corresponding to the RNTI groups are configured in advance, after the RNTI information of the radio network temporary identifier allocated when each terminal accesses the network is acquired, the RNTI group to which each terminal belongs is determined according to the RNTI information of each terminal, and then PDCCH resource allocation is performed on each terminal according to the RNTI group to which each terminal belongs. According to the embodiment of the disclosure, the PDCCH resource allocation is performed on each terminal according to the RNTI grouping corresponding to different aggregation levels of different time slots by configuring the RNTI grouping corresponding to different aggregation levels of different time slots, so that the resource allocation efficiency can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
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The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 shows a PDCCH resource allocation system architecture diagram in an embodiment of the present disclosure;
fig. 2 shows a flow chart of a PDCCH resource allocation method in an embodiment of the present disclosure;
figure 3 shows a schematic diagram of an RNTI grouping situation in an embodiment of the present disclosure;
figure 4 shows a schematic diagram of another RNTI grouping situation in an embodiment of the present disclosure;
fig. 5 shows a flow chart of an alternative PDCCH resource allocation method in an embodiment of the present disclosure;
fig. 6 shows a PDCCH resource allocation and allocation flow chart in an embodiment of the present disclosure;
fig. 7 shows a PDCCH resource allocation parameter maintenance flow chart in the disclosed embodiment;
fig. 8 shows a schematic diagram of a PDCCH resource allocation apparatus in an embodiment of the present disclosure;
FIG. 9 is a block diagram of an electronic device according to an embodiment of the disclosure;
FIG. 10 is a schematic diagram of a computer-readable storage medium in an embodiment of the disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
For convenience of understanding, before describing the embodiments of the present disclosure, several terms referred to in the embodiments of the present disclosure are first explained as follows:
UE: user Equipment, also called a User terminal, or simply a terminal.
PDCCH: physical Downlink Control Channel, Physical Downlink Control Channel.
CCE: control Channel Element, Control Channel Element.
RNTI: radio Network Temporary Identity, used to identify the UE on the common transport channel.
DCI: downlink Control Information, Downlink Control Information.
Specific embodiments of the disclosed embodiments are described in detail below with reference to the accompanying drawings.
In the 5G NR, information such as frequency domain scheduling range information and time domain OFDM symbol number of a PDCCH channel is encapsulated in a control resource set CORESET, information such as time domain starting symbol information and a detection period is encapsulated in a search space, and the frequency domain scheduling range information can determine that the PDCCH is transmitted within the RB range of the cope but cannot determine which RBs to transmit. Therefore, after the PDCCH channel determines the physical resource information, the search space type (CSS or USS), and other information, the terminal searches the PDCCH on the CORESET according to different RNTI types in different search spaces.
The basic granularity of PDCCH resource allocation is one CCE, and the aggregation level is the number of CCEs used for carrying one DCI.
Since the dynamic scheduling of downlink or uplink resources is performed at the eNB side, and both the aggregation level and the starting position are allocated by the eNB side, in a certain downlink subframe, the terminal cannot know exactly how many aggregation levels of CCEs occupied by the PDCCH and where the starting position index of the CCEs is located in advance. Therefore, the terminal acquires the position of the PDCCH channel, i.e., CCE, by PDCCH blind detection every time, and the time consumed for blind detection is relatively long.
Before the PDCCH blind detection process is executed, the terminal may obtain information such as time-frequency resource information, a scheduling period, CCE aggregation levels possibly transmitted by the PDCCH, and blind detection times required by each aggregation level of the PDCCH according to the search space and the CORESET associated with the search space. Therefore, the terminal can determine each resource candidate set according to the above information by combining the blind detection formula, decode each PDCCH resource candidate set, and stop the blind detection process once the decoding is successful.
In 5G, the blind detection formula of the PDCCH resource candidate set is as follows:
Figure BDA0003696526420000061
wherein L represents an aggregation level of PDCCH resources; for CSS, L takes the value {4,8,16 }; for USS, L takes the value {1,2,4,8,16 }; y represents the frequency domain starting position of the PDCCH resource candidate set; in the case of the CSS, the,
Figure BDA0003696526420000062
for the case of the USS,
Figure BDA0003696526420000063
and has Y p,-1 ＝n RNTI Not equal to 0, D65537; wherein, when pmod3 is 0, A p 39827; pmod3 ═ 1 when pmod3 ═ 1, a p 39829; when pmod3 is 2, A p ＝39839A p ＝39839；N CCE,p Representing the number of CCEs contained in CORESETp;
Figure BDA0003696526420000064
indicates the number of PDCCH resource candidate sets,
Figure BDA0003696526420000065
wherein n is CI Represents a carrier indication value, s represents a search space index;
Figure BDA0003696526420000066
indicates the corresponding carrier n when the aggregation level is L CI The number of PDCCH candidate sets, for CSS,
Figure BDA0003696526420000067
for the case of the USS,
Figure BDA0003696526420000071
indicating the control resource set coreset, search space s, aggregation level L, and all carriers n CI When indicating
Figure BDA0003696526420000072
Maximum value of (d); i denotes a CCE index.
In the process of PDCCH resource allocation, candidate CCE positions are calculated according to the aggregation level required by the UE according to the sequence of scheduling the UE,
Figure BDA0003696526420000073
the CCE positions are selected according to the sequence from small to large, if the CCE positions are found to be current
Figure BDA0003696526420000074
The corresponding CCE position conflict, namely the CCE position is indicated to be occupied by other users, then
Figure BDA0003696526420000075
Adds 1 and continues to try the next possible CCE location until an available CCE location is found. It can be found that the current PDCCH resource allocation has certain blindness, and when multiple UEs are scheduled, it is uncertain whether the candidate set calculated by the current aggregation level is idle or not before the PDCCH candidate set is calculated, and the worst case is passed through
Figure BDA0003696526420000076
After the trial, the idle CCE resources still cannot be found, and the CCE aggregation level needs to be changed for recalculation, which is repeated, thereby wasting valuable scheduling time and calculation processing.
Aiming at the problems of easiness in conflict and low efficiency of PDCCH resource allocation, the embodiment of the disclosure provides a low-complexity PDCCH resource allocation scheme, PDCCH resource allocation is performed according to RNTI information of a terminal and a rule that a PDCCH candidate set is occupied by an aggregation level, rapid candidate CCE selection is realized, and the processing speed of base station scheduling is greatly improved.
The PDCCH resource allocation method provided in the embodiments of the present disclosure has the following main ideas: according to a calculation formula of the PDCCH resource candidate set, the RNTI groups under different time slot numbers and different aggregation levels are determined, and the same RNTI group has the completely same PDCCH candidate set, namely the same RNTI group
Figure BDA0003696526420000077
The corresponding CCE positions are completely the same; when the UE accesses the network, acquiring the RNTI information of the UE, namely acquiring the RNTI group to which the UE belongs in different time slots and different aggregation levels; in each resource dynamic scheduling process, each RNTI group is respectively carried out
Figure BDA0003696526420000078
L n And G n Etc., in which, among other things,
Figure BDA0003696526420000079
indicates the number of PDCCH resource candidate sets, L n Denotes the polymerization grade, G n The group number of the RNTI group is represented, and when the UE is accessed to the network, the current aggregation level corresponding to the RNTI group is read
Figure BDA00036965264200000710
L n And G n The candidate resource location attempt is made with equal parameters, if
Figure BDA00036965264200000711
L n And G n And if all the parameters are used, indicating that all the candidate set positions of the current aggregation level are occupied, and directly changing the aggregation level to select the candidate resources again. Therefore, the method for allocating the PDCCH resources provided by the embodiment of the disclosure can avoid PDCCH resource allocation conflict and improve PDCCH resource allocation efficiency.
Fig. 1 shows an exemplary application system architecture diagram to which the PDCCH resource allocation method in the disclosed embodiment may be applied. As shown in fig. 1, the system architecture includes a terminal device 101, a network 102, and a network-side device 103; wherein, the network side device 103 is configured to: acquiring Radio Network Temporary Identity (RNTI) information distributed when a plurality of terminal equipment 101 are respectively accessed to a network; determining an RNTI group to which each terminal device 101 belongs according to RNTI information of each terminal device 101 and a plurality of RNTI groups configured in advance, wherein different RNTI groups correspond to different PDCCH resource candidate sets; and according to the RNTI grouping to which each terminal device 101 belongs, performing PDCCH resource allocation on each terminal device 101.
The medium of the network 102 for providing a communication link between the terminal device 101 and the network-side device 103 may be a wired network or a wireless network.
Optionally, the wireless or wired networks described above use standard communication techniques and/or protocols. The Network is typically the Internet, but may be any Network including, but not limited to, a Local Area Network (LAN), a Metropolitan Area Network (MAN), a Wide Area Network (WAN), a mobile, wireline or wireless Network, a private Network, or any combination of virtual private networks. In some embodiments, data exchanged over a network is represented using techniques and/or formats including Hypertext Mark-up Language (HTML), Extensible markup Language (XML), and the like. All or some of the links may also be encrypted using conventional encryption techniques such as Secure Socket Layer (SSL), Transport Layer Security (TLS), Virtual Private Network (VPN), Internet protocol Security (IPsec). In other embodiments, custom and/or dedicated data communication techniques may also be used in place of, or in addition to, the data communication techniques described above.
Optionally, the terminal Device in the embodiment of the present disclosure may also be referred to as a UE (User Equipment, also referred to as a User terminal, abbreviated as a terminal), and in a specific implementation, the terminal Device may be a terminal Device side Device such as a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or a vehicle-mounted Device, and it should be noted that a specific type of the terminal Device is not limited in the embodiment of the present disclosure.
The network side device may be a base station, a relay, an access point, or the like. The base station may be a base station of 5G and later versions (e.g., a 5G NR NB), or a base station in other communication systems (e.g., an eNB NB), and it should be noted that a specific type of the network side device is not limited in the embodiment of the present disclosure.
Those skilled in the art will appreciate that the number of terminal devices, networks, and network-side devices in fig. 1 is merely illustrative, and that there may be any number of terminal devices, networks, and network-side devices according to actual needs. The embodiments of the present disclosure are not limited thereto.
Under the system architecture, the embodiment of the present disclosure provides a PDCCH resource allocation method, which may be executed by any electronic device with computing processing capability. In some embodiments, the PDCCH resource allocation method provided in the embodiments of the present disclosure may be executed by a network side device of the system architecture; in other embodiments, the PDCCH resource allocation method provided in the embodiments of the present disclosure may be implemented by the terminal device and the network side device in the system architecture in an interactive manner.
Fig. 2 shows a flowchart of a PDCCH resource allocation method in the embodiment of the present disclosure, and as shown in fig. 2, the PDCCH resource allocation method provided in the embodiment of the present disclosure includes the following steps:
s202, acquiring Radio Network Temporary Identifier (RNTI) information distributed when a plurality of terminals access to the network.
It should be noted that each terminal is assigned a radio network temporary identifier RNTI when accessing the network, so as to distinguish the identifiers of different terminals between the terminal and the base station. The network accessed by the terminal in the embodiment of the present disclosure may be a 4G network, a 5G network, or a network after 5G.
S204, according to the RNTI information of each terminal and a plurality of RNTI groups configured in advance, the RNTI group to which each terminal belongs is determined, wherein different RNTI groups correspond to different PDCCH resource candidate sets.
It should be noted that, by configuring a plurality of RNTI packets and resource allocation attribute information (for example, a PDCCH resource candidate set) corresponding to each RNTI packet in advance, after acquiring RNTI information of each terminal, the RNTI information can be matched with RNTI information in each RNTI packet to determine the RNTI packet to which each terminal belongs, so as to allocate PDCCH resources to each terminal in the form of RNTI packet.
Different aggregation levels result in different grouping situations of the RNTIs, and thus, in some embodiments, before determining the RNTI group to which each terminal belongs according to the RNTI information of each terminal and a plurality of RNTI groups configured in advance, the PDCCH resource allocation method provided in the embodiments of the present disclosure may further configure the RNTI groups by: acquiring the number of Control Channel Elements (CCEs) contained in the PDCCH resource to be allocated and one or more aggregation levels supported by the PDCCH resource to be allocated; and determining the RNTI grouping corresponding to each aggregation level according to the number of CCEs contained in the PDCCH resource to be allocated and one or more aggregation levels supported by the PDCCH resource to be allocated.
Further, in some embodiments, the S204 may query, at each time slot, RNTI groups to which each terminal belongs at different aggregation levels according to the RNTI information of each terminal.
It should be noted that, the aggregation level is the number of CCEs constituting one PDCCH channel; if the aggregation level of a certain PDCCH is 4, the PDCCH is indicated to be composed of 4 CCEs with continuous indexes; if the aggregation level of a certain PDCCH channel is 2, it indicates that the PDCCH channel consists of 2 CCEs with consecutive indexes.
Fig. 3 shows the case of RNTI grouping when the total number of CCEs is 45 and the aggregation level is 4; fig. 4 shows the case of RNTI grouping when the total number of CCEs is 45 and the aggregation level is 2.
In different time slots, the RNTI information of the terminal is changed, and therefore, in some embodiments, in step S204, RNTI groups to which the terminal belongs in different time slots and at different aggregation levels may be determined according to the RNTI information of the terminal in different time slots, and then PDCCH resource allocation is performed on each terminal according to the RNTI group to which each terminal belongs.
And S206, distributing PDCCH resources to each terminal according to the RNTI grouping to which each terminal belongs.
In some embodiments, as shown in fig. 5, the PDCCH resource allocation method provided in the embodiments of the present disclosure may implement PDCCH resource allocation through the following steps:
s502, acquiring RNTI groups of each terminal under different aggregation levels;
s504, according to the determined aggregation level, sequentially allocating a PDCCH resource candidate set of the RNTI grouping corresponding to the corresponding aggregation level for each terminal which is not allocated with PDCCH resources.
In some embodiments, each terminal that is not allocated with PDCCH resources may be sequentially allocated with PDCCH resource candidate sets of RNTI packets corresponding to respective aggregation levels in the order of aggregation levels from large to small.
In some embodiments, the step S504 may be specifically implemented by the following steps: judging whether the positions of the PDCCH resource candidate sets of the RNTI grouping corresponding to the current aggregation level are all occupied or not; if not, sequentially allocating the PDCCH resource candidate sets of the RNTI groups corresponding to the corresponding aggregation levels to each terminal which is not allocated with PDCCH resources according to the PDCCH resource candidate sets of the RNTI groups corresponding to the current aggregation levels; and if so, changing the aggregation level, and sequentially allocating the PDCCH resource candidate sets of the RNTI grouping corresponding to the corresponding aggregation level to each terminal which is not allocated with PDCCH resources according to the PDCCH resource candidate sets of the RNTI grouping corresponding to the changed aggregation level.
It should be noted that, in the foregoing embodiment, the current aggregation level and the changed aggregation level are both aggregation levels supported by PDCCH resources to be allocated, and the current aggregation level is greater than the changed aggregation level.
In some embodiments, the PDCCH resource allocation method provided in the embodiments of the present disclosure may determine the RNTI packet corresponding to each aggregation level according to the following formula:
Figure BDA0003696526420000111
for CSS:
Figure BDA0003696526420000112
for the USS:
Figure BDA0003696526420000113
and Y is p,-1 ＝n RNTI ≠0；
Wherein L represents an aggregation level of PDCCH resources;
Figure BDA0003696526420000114
indicating a time slot
Figure BDA0003696526420000115
A corresponding random quantity;
Figure BDA0003696526420000116
indicating a time slot
Figure BDA0003696526420000117
A corresponding random quantity; a and D represent natural numbers; n is CI Representing a carrier indication value; s represents a search space index; m represents the number of PDCCH resource candidate sets,
Figure BDA0003696526420000118
Figure BDA0003696526420000119
indicates the corresponding carrier n when the aggregation level is L CI The number of PDCCH candidate sets;
Figure BDA00036965264200001110
to represent
Figure BDA00036965264200001111
Maximum value of (d); mod represents an ceiling function; n is a radical of CCE,p Representing the number of CCEs contained in the control resource set p; i denotes a CCE index.
It should be noted that the above formula is used in the 5G standard to determine CCE index positions occupied by PDCCH candidates, and in the embodiment of the present disclosure, RNTI packets corresponding to different aggregation levels are determined by using the above formula.
In specific implementation, each terminal which is not allocated with PDCCH resources may be sequentially allocated with a PDCCH resource candidate set of RNTI packets corresponding to the corresponding aggregation level through the following steps: determining an RNTI group to which the terminal belongs according to the aggregation level; RNTI grouping correspondence to which read terminal belongs
Figure BDA00036965264200001112
Taking the value of (A); to be read
Figure BDA00036965264200001113
Substituting the value of (A) into the above formula
Figure BDA00036965264200001114
CCE position calculation is carried out, resource allocation attempt is started, and whether the result of the attempt is successful or not, the CCE position calculation is carried out
Figure BDA00036965264200001115
Adds 1 to the value of (c), and makes resource allocation attempt again until resource allocation is successful or the values of RNTI grouping under all aggregation levels are attempted, wherein L is n Denotes the polymerization grade, G n A group number indicating an RNTI group; aggregation level of PDCCH resources.
Fig. 6 shows a PDCCH resource allocation and allocation flowchart in the embodiment of the present disclosure, and as shown in fig. 6, the method specifically includes the following steps:
s602, determining the grouping of RNTIs under different aggregation levels and different time slot numbers.
The RNTIs of the same group have identical candidate sets, i.e. identical
Figure BDA00036965264200001116
The corresponding CCE positions are identical. Computing formula using candidate set
Figure BDA0003696526420000121
And performing RNTI grouping determination. The grouping number of all RNTIs under the given aggregation level of the given time slot number is
Figure BDA0003696526420000122
The terminals of the same group have exactly the same candidate set, i.e. use the same
Figure BDA0003696526420000123
The computed CCE positions are completely the same;
s604, acquiring RNTI groups to which the terminal belongs in different time slots and different aggregation levels after the terminal accesses the network and acquires RNTI information of the terminal;
s606, in the dynamic scheduling process, parameters are carried out according to the RNTI group
Figure BDA0003696526420000124
Maintenance of (3).
Specifically, the terminal reads the RNTI group corresponding to the current aggregation level
Figure BDA0003696526420000125
Make a candidate resource location attempt when
Figure BDA0003696526420000126
And the time indicates that the current aggregation level of the terminal does not have a candidate set available, and the quick search of the idle PDCCH resource is realized without redundant calculation.
Fig. 7 shows a PDCCH resource allocation parameter maintenance flowchart in the embodiment of the present disclosure, and as shown in fig. 7, parameters are performed according to RNTI groups in different aggregation levels
Figure BDA0003696526420000127
The maintenance specifically includes:
s702, initializing all
Figure BDA0003696526420000128
S704, the terminal determines the RNTI group to which the terminal belongs according to the aggregation level, and reads the RNTI group
Figure BDA0003696526420000129
Taking the value of (A);
s706, judging
Figure BDA00036965264200001210
Whether or not the value of (A) is equal to
Figure BDA00036965264200001211
If it is
Figure BDA00036965264200001212
If all candidate sets of the current aggregation level are occupied, executing step S708; if it is
Figure BDA00036965264200001213
Then S710 is performed;
s708, the terminal changes the aggregation level to perform resource allocation again;
s710, use
Figure BDA00036965264200001214
Performing CCE position calculation and starting a resource allocation attempt;
s712, if the currently scheduled terminal is successfully scheduled, the current scheduled terminal will be scheduled
Figure BDA00036965264200001215
Adds 1 to the value of (A), if the scheduling of the current scheduled terminal fails, it indicates that the current scheduling is failed
Figure BDA00036965264200001216
Occupied by other groups of terminals, will also need to be
Figure BDA00036965264200001217
Adding 1 to the value of (1), and performing resource allocation attempt again;
s714, judging whether the allocation is successful or not, or judging the RNTI group under all aggregation levels
Figure BDA00036965264200001218
Has been tried; if yes, go to S714; if not, returning to execute S704;
s716, the flow ends.
As can be seen from the above, in the PDCCH resource allocation method provided in this embodiment of the present disclosure, RNTI groups may be configured and determined according to networking basic parameters, and stored in advance, when a terminal accesses a network, the grouping conditions of different time slots and different aggregation levels of the terminal may be determined according to RNTI information, and no real-time calculation is required, so that time is changed in space, and grouping is performed according to different aggregation levels
Figure BDA0003696526420000131
The value maintenance is simple and convenient, the quick searching and allocation of idle resources can be realized, unnecessary redundant calculation is avoided, and the processing time of PDCCH resource allocation is shortened.
The embodiments of the present disclosure will be described below with reference to specific embodiments.
The parameters are assumed to be as follows: the total number of CCEs is 45, the carrier interval is 30kHz, the number of corresponding time slots is 20, A p ＝39829，
Figure BDA0003696526420000132
Assuming that the RNTIs of the networked UEs are 3, 16, 29, 42, 55, 68, 81, 94, 97, 107 ten users, aggregation levels of 4 and 2 may be used.
The first step is as follows: determining the grouping of RNTIs under different aggregation levels and different time slot numbers, wherein RNTIs in the same group have the same candidate set, namely the same candidate set
Figure BDA0003696526420000133
The corresponding CCE positions are identical. RNTI grouping determination is performed using the following candidate set calculation formula:
Figure BDA0003696526420000134
at a given pointUnder the time slot number, different aggregation levels have different groups, and the number of the groups is
Figure BDA0003696526420000135
Terminals of the same group have exactly the same candidate set, i.e. use the same
Figure BDA0003696526420000136
The computed CCE locations are identical. As above fig. 3 gives all RNTI grouping cases with total CCE 45, slot number 0, aggregation level 4. Wherein the first row is a group number, the rest rows are RNTI values, 65519 RNTIs are divided into 11 groups in the example, and each group has about 5957 RNTIs; fig. 4 shows all RNTI groups with total CCE of 45, slot number 0, aggregation level 2, and there are 22 groups in total.
The second step is that: and determining the group number to which the RNTI belongs under different aggregation levels of different subframes, for the sake of simplicity, assuming that the RNTI of the networked UE is ten users of 3, 16, 29, 42, 55, 68, 81, 94, 97 and 107, reading the table to find that all the users belong to the group 1 in the time slot 0 and the aggregation level 4, the users 3, 29, 55, 81 and 107 belong to the group 1 in the time slot 0 and the aggregation level 2, and the users 16, 42, 68, 94 and 97 belong to the group 12.
The third step: determining PDCCH resources, initializing
Figure BDA0003696526420000137
When the resource allocation is continuously scheduled in the order of the RNTIs and the PDCCH resource allocation is tried from aggregation level 4 in priority, users 3, 16, 29, 42, 55 and 68 are allocated in sequence
Figure BDA0003696526420000138
When the user 81 is reallocated to the CCE resource(s), the CCE resource(s) is read
Figure BDA0003696526420000139
Indicating that the resource of aggregation level 4 has not been available with a candidate set, so that from user 81, aggregation level 4 cannot be used anymore, only an attempt can be made on aggregation level 2, and therefore a read is required
Figure BDA00036965264200001310
The values are allocated to resources, that is, the allocation of the following four users needs to be performed to the corresponding groups respectively
Figure BDA00036965264200001311
Reading values, user 81 and user 107 correspond
Figure BDA0003696526420000141
User 94 corresponds to user 97
Figure BDA0003696526420000142
The specific allocation is not described in detail.
Based on the same inventive concept, embodiments of the present disclosure further provide a PDCCH resource allocation apparatus, as described in the following embodiments. Because the principle of the embodiment of the apparatus for solving the problem is similar to that of the embodiment of the method, the embodiment of the apparatus can be implemented by referring to the implementation of the embodiment of the method, and repeated details are not described again.
Fig. 8 is a schematic diagram of a PDCCH resource allocation apparatus in an embodiment of the present disclosure, and as shown in fig. 8, the apparatus includes: an RNTI information acquisition module 801, an RNTI grouping module 802, and a resource allocation module 803.
The RNTI information acquiring module 801 is configured to acquire RNTI information of a radio network temporary identifier allocated to each of a plurality of terminals when the terminal accesses a network; an RNTI grouping module 802, configured to determine an RNTI group to which each terminal belongs according to RNTI information of each terminal and a plurality of RNTI groups configured in advance, where different RNTI groups correspond to different PDCCH resource candidate sets; a resource allocation module 803, configured to perform PDCCH resource allocation for each terminal according to the RNTI group to which each terminal belongs.
It should be noted that the RNTI information obtaining module 801, the RNTI grouping module 802, and the resource allocating module 803 correspond to S202 to S206 in the method embodiment, and the modules are the same as the examples and application scenarios realized by the corresponding steps, but are not limited to the disclosure in the method embodiment. It should be noted that the modules described above as part of an apparatus may be implemented in a computer system such as a set of computer-executable instructions.
In some embodiments, the PDCCH resource allocation apparatus provided in the embodiments of the present disclosure further includes: an aggregation level determining module 804, configured to obtain the number of Control Channel Elements (CCEs) included in the PDCCH resource to be allocated and one or more aggregation levels supported by the PDCCH resource to be allocated; an RNTI grouping determining module 805, configured to determine, according to the number of CCEs included in the PDCCH resource to be allocated and one or more aggregation levels supported by the PDCCH resource to be allocated, an RNTI grouping corresponding to each aggregation level.
Figure BDA0003696526420000143
The number of candidate sets of resources is,
Figure BDA0003696526420000144
wherein n is CI Represents a carrier indication value, s represents a search space index;
Figure BDA0003696526420000151
indicates the corresponding carrier n when the aggregation level is L CI The number of PDCCH candidate sets;
Figure BDA0003696526420000152
to represent
Figure BDA0003696526420000153
Maximum value of (d); n is a radical of CCE,p Representing the number of CCEs contained in CORESETp; i denotes a CCE index.
In some embodiments, the RNTI packet determination module 805 described above is further configured to: and inquiring the RNTI grouping which each terminal belongs to under different aggregation levels under each time slot according to the RNTI information of each terminal.
In some embodiments, the resource allocation module 803 is further configured to: acquiring RNTI groups of each terminal under different aggregation levels; and according to the determined aggregation level, sequentially allocating a PDCCH resource candidate set of the RNTI grouping corresponding to the corresponding aggregation level to each terminal which is not allocated with the PDCCH resource.
In some embodiments, the resource allocation module 803 may allocate, in order from the largest aggregation level to the smallest aggregation level, a PDCCH resource candidate set of an RNTI packet corresponding to a corresponding aggregation level for each terminal to which a PDCCH resource is not allocated.
In some embodiments, the resource allocation module 803 is further configured to: judging whether the positions of the PDCCH resource candidate sets of the RNTI grouping corresponding to the current aggregation level are all occupied or not; if not, sequentially allocating the PDCCH resource candidate sets of the RNTI groups corresponding to the corresponding aggregation levels to each terminal which is not allocated with PDCCH resources according to the PDCCH resource candidate sets of the RNTI groups corresponding to the current aggregation levels; and if so, changing the aggregation level, and sequentially allocating the PDCCH resource candidate sets of the RNTI grouping corresponding to the corresponding aggregation level to each terminal which is not allocated with PDCCH resources according to the PDCCH resource candidate sets of the RNTI grouping corresponding to the changed aggregation level.
In some embodiments, the resource allocation module 803 is further configured to: determining an RNTI group to which the terminal belongs according to the aggregation level; RNTI grouping correspondence to which read terminal belongs
Figure BDA0003696526420000154
Taking the value of (A); to be read
Figure BDA0003696526420000155
Substituting the values of (A) into the following formula
Figure BDA0003696526420000156
CCE position calculation is carried out, resource allocation attempt is started, and whether the result of the attempt is successful or not, the CCE position calculation is carried out
Figure BDA0003696526420000157
Adding 1 to the value of (2), and repeating the resource allocation attempt until the resource allocation is successful or the values of the RNTI grouping under all aggregation levels are attempted:
Figure BDA0003696526420000158
wherein L represents an aggregation level of PDCCH resources;
Figure BDA0003696526420000159
the starting position of the PDCCH resource candidate set in the search space can be any position; m represents the number of PDCCH resource candidate sets, and s represents a search space index; n is CI Representing a carrier indication value; l is n Denotes the polymerization grade, G n A group number indicating an RNTI group; an aggregation level of PDCCH resources;
Figure BDA0003696526420000161
Figure BDA0003696526420000162
indicates the corresponding carrier n when the aggregation level is L CI The number of PDCCH candidate sets;
Figure BDA0003696526420000163
to represent
Figure BDA0003696526420000164
Maximum value of (d); mod represents an ceiling function; n is a radical of CCE,p Representing the number of CCEs contained in the control resource set p; i denotes a CCE index.
In some embodiments, the current aggregation level and the changed aggregation level are both aggregation levels supported by the PDCCH resource to be allocated, and the current aggregation level is greater than the changed aggregation level.
As will be appreciated by one skilled in the art, aspects of the present disclosure may be embodied as a system, method or program product. Accordingly, various aspects of the present disclosure may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
An electronic device 900 according to this embodiment of the disclosure is described below with reference to fig. 9. The electronic device 900 shown in fig. 9 is only an example and should not bring any limitations to the functionality or scope of use of the embodiments of the present disclosure.
As shown in fig. 9, the electronic device 900 is embodied in the form of a general purpose computing device. Components of electronic device 900 may include, but are not limited to: the at least one processing unit 910, the at least one memory unit 920, and a bus 930 that couples various system components including the memory unit 920 and the processing unit 910.
Wherein the storage unit stores program code that is executable by the processing unit 910 to cause the processing unit 910 to perform steps according to various exemplary embodiments of the present disclosure described in the above section "exemplary method" of the present specification. For example, the processing unit 910 may perform the following steps of the above method embodiments: acquiring Radio Network Temporary Identifier (RNTI) information distributed when a plurality of terminals access a network respectively; determining an RNTI group to which each terminal belongs according to RNTI information of each terminal and a plurality of RNTI groups configured in advance, wherein different RNTI groups correspond to different PDCCH resource candidate sets; and performing PDCCH resource allocation on each terminal according to the RNTI grouping to which each terminal belongs.
The storage unit 920 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM)9201 and/or a cache memory unit 9202, and may further include a read only memory unit (ROM) 9203.
Storage unit 920 may also include a program/utility 9204 having a set (at least one) of program modules 9205, such program modules 9205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
Bus 930 can be any of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device 900 may also communicate with one or more external devices 940 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 900, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 900 to communicate with one or more other computing devices. Such communication may occur via input/output (I/O) interface 950. Also, the electronic device 900 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public network, such as the Internet) via the network adapter 960. As shown, the network adapter 960 communicates with the other modules of the electronic device 900 via the bus 930. It should be appreciated that although not shown, other hardware and/or software modules may be used in conjunction with the electronic device 900, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium, which may be a readable signal medium or a readable storage medium. Fig. 10 is a schematic diagram of a computer-readable storage medium in an embodiment of the disclosure, and as shown in fig. 10, the computer-readable storage medium 1000 has a program product stored thereon, which is capable of implementing the above-mentioned method of the disclosure. In some possible embodiments, various aspects of the disclosure may also be implemented in the form of a program product comprising program code for causing a terminal device to perform the steps according to various exemplary embodiments of the disclosure described in the "exemplary methods" section above of this specification, when the program product is run on the terminal device.
More specific examples of the computer-readable storage medium in the present disclosure may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
In the present disclosure, a computer readable storage medium may include a propagated data signal with readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Alternatively, program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
In particular implementations, program code for carrying out operations of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + +, or the like, as well as conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Moreover, although the steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that the steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (11)

1. A PDCCH resource allocation method is characterized by comprising the following steps:
acquiring Radio Network Temporary Identifier (RNTI) information distributed when a plurality of terminals access a network respectively;
the method comprises the steps that RNTI groups to which each terminal belongs are determined according to RNTI information of each terminal and a plurality of RNTI groups configured in advance, wherein different RNTI groups correspond to different PDCCH resource candidate sets;
and performing PDCCH resource allocation on each terminal according to the RNTI grouping to which each terminal belongs.
2. The PDCCH resource allocation method according to claim 1, wherein before determining the RNTI packet to which each terminal belongs according to the RNTI information of each terminal and a plurality of RNTI packets configured in advance, the method further comprises:
acquiring the number of Control Channel Elements (CCEs) contained in a PDCCH resource to be allocated and one or more aggregation levels supported by the PDCCH resource to be allocated;
and determining an RNTI group corresponding to each aggregation level according to the number of CCEs contained in the PDCCH resource to be allocated and one or more aggregation levels supported by the PDCCH resource to be allocated, wherein RNTIs with the same PDCCH resource candidate set are one RNTI group.
3. The PDCCH resource allocation method according to claim 2, wherein the RNTI grouping corresponding to each aggregation level is determined by the following formula:
Figure FDA0003696526410000011
for CSS:
Figure FDA0003696526410000012
for the USS:
Figure FDA0003696526410000013
and Y is p,-1 ＝n RNTI ≠0；
Wherein L represents an aggregation level of PDCCH resources;
Figure FDA0003696526410000014
indicating a time slot
Figure FDA0003696526410000015
A corresponding random quantity;
Figure FDA0003696526410000016
indicating a time slot
Figure FDA0003696526410000017
A corresponding random quantity; a and D represent natural numbers; n is CI Representing a carrier indication value; s represents a search space index; m represents the number of PDCCH resource candidate sets,
Figure FDA0003696526410000018
Figure FDA0003696526410000019
indicates the corresponding carrier n when the aggregation level is L CI The number of PDCCH candidate sets;
Figure FDA00036965264100000110
to represent
Figure FDA00036965264100000111
Maximum value of (d); mod represents an ceiling function; n is a radical of CCE,p To representControlling the number of CCEs contained in the resource set p; i denotes a CCE index.
4. The PDCCH resource allocation method of claim 2, wherein determining the RNTI grouping to which each terminal belongs according to the RNTI information of each terminal and a plurality of RNTI groupings configured in advance comprises:
and inquiring the RNTI grouping which each terminal belongs to under different aggregation levels under each time slot according to the RNTI information of each terminal.
5. The PDCCH resource allocation method of claim 4, wherein the PDCCH resource allocation is performed on each terminal according to the RNTI grouping to which each terminal belongs, and the method comprises the following steps:
acquiring RNTI groups of each terminal under different aggregation levels;
and according to the determined aggregation level, sequentially allocating a PDCCH resource candidate set of the RNTI grouping corresponding to the corresponding aggregation level to each terminal which is not allocated with the PDCCH resource.
6. The PDCCH resource allocation method of claim 5, wherein allocating PDCCH resource candidate sets of RNTI packets corresponding to corresponding aggregation levels to each terminal to which PDCCH resources are not allocated in sequence according to the determined aggregation levels comprises:
judging whether the positions of the PDCCH resource candidate sets of the RNTI grouping corresponding to the current aggregation level are all occupied or not;
if not, sequentially allocating the PDCCH resource candidate sets of the RNTI groups corresponding to the corresponding aggregation levels to each terminal which is not allocated with PDCCH resources according to the PDCCH resource candidate sets of the RNTI groups corresponding to the current aggregation levels;
and if so, changing the aggregation level, and sequentially allocating the PDCCH resource candidate sets of the RNTI grouping corresponding to the corresponding aggregation level to each terminal which is not allocated with PDCCH resources according to the PDCCH resource candidate sets of the RNTI grouping corresponding to the changed aggregation level.
7. The PDCCH resource allocation method of claim 6, wherein allocating the PDCCH resource candidate sets of the RNTI grouping corresponding to the corresponding aggregation level for each terminal to which PDCCH resources are not allocated in turn comprises:
determining an RNTI group to which the terminal belongs according to the aggregation level;
RNTI grouping correspondence to which read terminal belongs
Figure FDA0003696526410000021
Taking the value of (A);
to be read
Figure FDA0003696526410000022
Substituting the values of (A) into the following formula
Figure FDA0003696526410000023
CCE position calculation is carried out, resource allocation attempt is started, and whether the result of the attempt is successful or not, the CCE position calculation is carried out
Figure FDA0003696526410000024
Adding 1 to the value of (2), and repeating the resource allocation attempt until the resource allocation is successful or the values of the RNTI grouping under all aggregation levels are attempted:
Figure FDA0003696526410000025
for CSS:
Figure FDA0003696526410000031
for the USS:
Figure FDA0003696526410000032
and Y is p,-1 ＝n RNTI ≠0；
Wherein L represents an aggregation level of PDCCH resources;
Figure FDA0003696526410000033
indicating a time slot
Figure FDA0003696526410000034
A corresponding random quantity;
Figure FDA0003696526410000035
indicating a time slot
Figure FDA0003696526410000036
A corresponding random quantity; a and D represent natural numbers; n is CI Representing a carrier indication value; s represents a search space index; m represents the number of PDCCH resource candidate sets,
Figure FDA0003696526410000037
Figure FDA0003696526410000038
indicates the corresponding carrier n when the aggregation level is L CI The number of PDCCH candidate sets;
Figure FDA0003696526410000039
to represent
Figure FDA00036965264100000310
Maximum value of (d); mod represents an ceiling function; n is a radical of CCE,p Representing the number of CCEs contained in the control resource set p; i denotes a CCE index.
8. The PDCCH resource allocation method of claim 6, wherein the current aggregation level and the changed aggregation level are both aggregation levels supported by the PDCCH resources to be allocated, and the current aggregation level is greater than the changed aggregation level.
9. A PDCCH resource allocation apparatus, comprising:
the RNTI information acquisition module is used for acquiring RNTI information of radio network temporary identifiers distributed when a plurality of terminals access to a network respectively;
the RNTI grouping module is used for determining RNTI groups to which each terminal belongs according to RNTI information of each terminal and a plurality of RNTI groups configured in advance, wherein different RNTI groups correspond to different PDCCH resource candidate sets;
and the resource allocation module is used for performing PDCCH resource allocation on each terminal according to the RNTI grouping to which each terminal belongs.
10. An electronic device, comprising:
a processor; and
a memory for storing executable instructions of the processor;
wherein the processor is configured to perform the PDCCH resource allocation method of any of claims 1-8 via execution of the executable instructions.
11. A computer-readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the PDCCH resource allocation method of any of claims 1-8.
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