CN114900899B - PDCCH resource allocation method, PDCCH resource allocation device, electronic equipment and storage medium - Google Patents

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

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CN114900899B
CN114900899B CN202210681745.3A CN202210681745A CN114900899B CN 114900899 B CN114900899 B CN 114900899B CN 202210681745 A CN202210681745 A CN 202210681745A CN 114900899 B CN114900899 B CN 114900899B
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rnti
pdcch
aggregation level
terminal
pdcch resource
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CN114900899A (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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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

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 the Radio Network Temporary Identifier (RNTI) information allocated when a plurality of terminals access to a network respectively; determining an RNTI group to which each terminal belongs according to RNTI information of each terminal and a plurality of preset RNTI groups, wherein different PDCCH resource candidate sets corresponding to different RNTI groups; and distributing PDCCH resources to each terminal according to the RNTI group to which each terminal belongs. According to the method and the device, the Physical Downlink Control Channel (PDCCH) resource allocation is carried out on each terminal according to the RNTI groups corresponding to different aggregation levels of different time slots and the RNTI groups of different aggregation levels of different time slots, so that the resource allocation efficiency can be improved.

Description

PDCCH resource allocation method, PDCCH resource allocation device, electronic equipment and storage medium
Technical Field
The disclosure relates to the technical field of communication, and in particular relates to a method and a device for distributing PDCCH resources, electronic equipment and a storage medium.
Background
The PDCCH (Physical Downlink Control Channel ) is used for carrying downlink control information (including downlink scheduling information, power control information, etc.), plays a very important role in the communication system, and is a necessary and precondition for correct information transmission by the receiving and transmitting ends of the communication system. Since the transmission bandwidth of the PDCCH may include multiple PDCCHs at the same time, in order to more effectively configure the time-frequency resource occupied by the PDCCH, the protocol defines a control channel resource unit: RE Group (RE Group) and CCE (Control Channel Element ), PDCCH resource allocation takes CCE as basic granularity. The UE (user equipment, also called terminal) attempts to decode DCI (Downlink Control Information ) in the PDCCH through the blind search space. Therefore, PDCCH resource allocation requires finding free CCE resource locations within a determined time-frequency resource region, a determined search space. The PDCCH resource allocation scheme provided in the related art includes a large amount of redundant computation, resulting in lower DCCH resource allocation efficiency.
It should be noted that the information disclosed in the above background section is only for enhancing 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 disclosure provides a method, a device, an electronic device and a storage medium for distributing PDCCH resources, which at least overcome the technical problem of low distribution efficiency of a PDCCH resource distribution scheme provided in the related art to a certain extent.
Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.
According to one aspect of the present disclosure, there is provided a PDCCH resource allocation method, including: acquiring the Radio Network Temporary Identifier (RNTI) information allocated when a plurality of terminals access to a network respectively; determining an RNTI group to which each terminal belongs according to RNTI information of each terminal and a plurality of preset RNTI groups, wherein different PDCCH resource candidate sets corresponding to different RNTI groups; and distributing PDCCH resources to each terminal according to the RNTI group to which each terminal belongs.
In some embodiments, before determining the RNTI packet to which each terminal belongs according to the RNTI information of each terminal and the plurality of RNTI packets configured in advance, the method further includes: acquiring the quantity of Control Channel Elements (CCEs) contained in PDCCH resources to be allocated and one or more aggregation levels supported by the PDCCH resources to be allocated; and determining the RNTI group corresponding to each aggregation level according to the quantity 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 group corresponding to each aggregation level is determined by the following formula:
for CSS:
for USS:and Y is p,-1 ＝n RNTI ≠0；
Wherein L represents an aggregation level of PDCCH resources;representing time slot->A corresponding random amount; />Representing time slotsA corresponding random amount; a and D represent natural numbers; n is n CI Representing a carrier indication value; s represents a search space index; m represents the number of PDCCH resource candidate sets, +.> Representing the corresponding carrier n at an aggregation level of L CI PDCCH candidate set number of (a); />Representation->Is the maximum value of (2); mod represents a rounding-up function; n (N) CCE,p Representing the number of CCEs contained in the control resource set p; i denotes a CCE index.
In some embodiments, determining the RNTI group to which each terminal belongs according to the RNTI information of each terminal and the plurality of pre-configured RNTI groups includes: and inquiring the RNTI groups of each terminal under different aggregation levels according to the RNTI information of each terminal.
In some embodiments, the PDCCH resource allocation is performed for each terminal according to the RNTI packet to which each terminal belongs, including: acquiring RNTI groups of each terminal under different aggregation levels; and according to the determined aggregation level, sequentially distributing PDCCH resource candidate sets corresponding to the RNTI groups of the corresponding aggregation level to each terminal not distributed with PDCCH resources.
In some embodiments, according to the determined aggregation level, allocating, in turn, a PDCCH resource candidate set of an RNTI packet corresponding to the corresponding aggregation level for each terminal to which no PDCCH resource is allocated, including: judging whether the PDCCH resource candidate set positions of the RNTI group corresponding to the current aggregation level are all occupied; if not, sequentially distributing the PDCCH resource candidate set of the RNTI group corresponding to the corresponding aggregation level to each terminal which is not distributed with PDCCH resources according to the PDCCH resource candidate set of the RNTI group corresponding to the current aggregation level; if yes, changing the aggregation level, and sequentially distributing the PDCCH resource candidate set of the corresponding RNTI group of the corresponding aggregation level to each terminal which is not distributed with PDCCH resources according to the PDCCH resource candidate set of the corresponding RNTI group of the changed aggregation level.
In some embodiments, allocating a PDCCH resource candidate set of the corresponding aggregation level corresponding RNTI packet for each terminal not allocated PDCCH resources in turn includes: determining an RNTI group to which the terminal belongs according to the aggregation level; reading the corresponding RNTI packet of the terminalIs a value of (2); read +.>Is substituted into the following formula>Performing CCE position calculation, starting resource allocation attempt, and whether the result of the attempt is successful or not >And (3) adding 1 to the value of the RNTI group, and re-performing resource allocation attempt until the resource allocation is successful or the value of the RNTI group under all aggregation levels is tried:
for CSS:
for USS:and Y is p,-1 ＝n RNTI ≠0；
Wherein L represents an aggregation level of PDCCH resources;representing time slot->A corresponding random amount; />Representing time slot->A corresponding random amount; a and D represent natural numbers; n is n CI Representing a carrier indication value; s represents a search space index; m represents the number of PDCCH resource candidate sets, +.> Representing the corresponding carrier n at an aggregation level of L CI PDCCH candidate set number of (a); />Representation->Is the maximum value of (2); mod represents a rounding-up function; n (N) 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 resources 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: an RNTI information acquisition module, configured to acquire radio network temporary identifier RNTI information allocated when each of a plurality of terminals accesses a network; an RNTI grouping module, 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; and the resource allocation module is used for allocating PDCCH resources to each terminal according to the RNTI group to which each terminal belongs.
According to another aspect of the present disclosure, there is also provided an electronic apparatus including: 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 the preceding claims 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 of the above.
According to the PDCCH resource allocation method, the PDCCH resource allocation device, the electronic equipment and the storage medium, after the Radio Network Temporary Identifier (RNTI) information allocated when each terminal accesses the network is acquired through pre-configuring a plurality of RNTI groups and PDCCH resource candidate sets corresponding to each RNTI group, the RNTI group to which each terminal belongs is determined according to the RNTI information of each terminal, and then PDCCH resources are allocated to each terminal according to the RNTI group to which each terminal belongs. According to the embodiment of the disclosure, the PDCCH resource allocation is carried out on each terminal according to the RNTI groups corresponding to different aggregation levels of different time slots and the RNTI groups of 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.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
Fig. 1 illustrates a schematic diagram of a PDCCH resource allocation system architecture in an embodiment of the present disclosure;
fig. 2 shows a flowchart of a PDCCH resource allocation method in an embodiment of the present disclosure;
fig. 3 illustrates a schematic diagram of an RNTI grouping scenario in an embodiment of the present disclosure;
fig. 4 shows still another RNTI grouping situation in an embodiment of the disclosure;
fig. 5 shows a flowchart of an alternative PDCCH resource allocation method in an embodiment of the present disclosure;
fig. 6 illustrates a PDCCH resource allocation and allocation flow diagram in an embodiment of the present disclosure;
fig. 7 illustrates a PDCCH resource allocation parameter maintenance flow chart in an embodiment of the present disclosure;
Fig. 8 is a schematic diagram of a PDCCH resource allocation apparatus in an embodiment of the present disclosure;
FIG. 9 shows a block diagram of an electronic device in an embodiment of the disclosure;
fig. 10 shows 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. However, the exemplary embodiments may be embodied in many 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 the 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 a repetitive description thereof 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 software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
For ease of understanding, before describing 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 User terminal, is called terminal for short.
PDCCH: physical Downlink Control Channel, physical downlink control channel.
CCE: control Channel Element, control channel element.
RNTI: radio Network Temporary Identity, a radio network temporary identity for identifying the UE on the common transport channel.
DCI: downlink Control Information, downlink control information.
The following detailed description of embodiments of the present disclosure refers to the accompanying drawings.
In 5G NR, information such as frequency domain scheduling range information of a PDCCH channel and the number of time-domain OFDM symbols are encapsulated in a control resource set CORESET, information such as time-domain start symbol information and a detection period are encapsulated in a search space, and the frequency domain scheduling range information can determine whether to transmit the PDCCH in the RB range of CORESET, but cannot determine which RBs to transmit. Therefore, after the PDCCH channel determines information such as physical resource information and search space type (CSS or USS), 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 to carry one DCI.
Since dynamic scheduling of downlink or uplink resources is performed at the eNB side, the aggregation level and the starting position are both allocated by the eNB side, so in a certain downlink subframe, the terminal cannot know exactly what the aggregation level of CCEs occupied by the PDCCH is and where the starting position index of the CCEs is. Therefore, for the terminal, the location of the PDCCH channel, i.e., CCE, is acquired every time by PDCCH blind detection, and the time consumed for blind detection is relatively large.
Before the PDCCH blind detection process is executed, the terminal can acquire the information such as time-frequency resource information, scheduling period, CCE aggregation level possibly transmitted by the PDCCH, blind detection times required by each aggregation level and the like 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 information and combining a blind detection formula, and decode each PDCCH resource candidate set, and once the decoding is successful, the blind detection flow is stopped.
In 5G, the blind test formula for the PDCCH resource candidate set is as follows:
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, In the case of a USS,and has Y p,-1 ＝n RNTI Not equal to 0, d=65537; wherein, when pmod3=0, a p =39827; pmod3=1 when pmod3=1, a p =39829; when pmod3=2, a p ＝39839A p ＝39839；N CCE,p Representing the number of CCEs contained in coreetp; />Representing the number of PDCCH resource candidate sets, +.>Wherein n is CI Representing a carrier indication value, s representing a search space index; />Representing the corresponding carrier n at an aggregation level of L CI Is the number of PDCCH candidate sets, +.for CSS>For USS, the +.>Representing the time and all carriers n in the control resource set CORESETp, search space s, aggregation level L CI Indication time->Is the maximum value of (2); i denotes a CCE index.
In the PDCCH resource allocation procedure, the adjustment is generally performedThe candidate CCE position calculation is carried out according to the sequence of the UE and the aggregation level required by the UE,the selection of CCE positions is performed in order of small to large if the current +.>Corresponding CCE position conflicts, i.e. indicating that the CCE position has been occupied by other users, +.>To increase by 1, the next possible CCE location is continued to be tried until an available CCE location is found. It can be found that the current PDCCH resource allocation has a certain blindness, and in the multi-UE scheduling, whether the candidate set calculated by the current aggregation level is idle or not is not determined before the PDCCH candidate set is calculated, and in the worst case, the method is performed by ∈ - >After the trial, the idle CCE resources still cannot be found, and the CCE aggregation level needs to be replaced for recalculation, so that the steps are repeated, and precious scheduling time and calculation processing procedures are wasted.
Aiming at the problems of easy conflict and low efficiency of PDCCH resource allocation, the embodiment of the disclosure provides a PDCCH resource allocation scheme with low complexity, and PDCCH resource allocation is performed according to the RNTI information of the terminal and the rule that the aggregation level occupies the PDCCH candidate set, so that quick candidate CCE selection is realized, and the processing speed of base station scheduling is greatly improved.
The PDCCH resource allocation method provided in the embodiment of the disclosure has the main ideas that: determining RNTI groups under different aggregation levels of different time slot numbers according to a calculation formula of the PDCCH resource candidate set, wherein the same RNTI group has the identical PDCCH candidate set, namely the identical RNTI groupThe corresponding CCE positions are identical; when (when)When the UE accesses the network, the RNTI information of the UE is obtained, namely the RNTI group of the UE under different aggregation levels of different time slots can be obtained; in each dynamic scheduling process of resources, each RNTI group is respectively carried out +.>L n And G n Maintenance of equal parameters, wherein->Indicating the number of PDCCH resource candidate sets, L n Indicating the aggregation level, G n The group number representing the RNTI group, when the UE accesses the network, reading the +.f of the RNTI group corresponding to the current aggregation level>L n And G n Equal parameters make candidate resource location attempts, if +.>L n And G n And if all the equal parameters are used, indicating that all candidate set positions of the current aggregation level are occupied, and directly changing the aggregation level to re-select the candidate resources. Therefore, the PDCCH resource allocation method provided by the embodiment of the disclosure can avoid PDCCH resource allocation conflict and improve PDCCH resource allocation efficiency.
Fig. 1 shows a schematic diagram of an exemplary application system architecture to which the PDCCH resource allocation method in the embodiments of the present disclosure 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 used for: acquiring Radio Network Temporary Identifier (RNTI) information allocated when each of a plurality of terminal devices 101 accesses a network; determining an RNTI group to which each terminal equipment 101 belongs according to RNTI information of each terminal equipment 101 and a plurality of preset RNTI groups, wherein different PDCCH resource candidate sets corresponding to different RNTI groups; and performing PDCCH resource allocation on each terminal equipment 101 according to the RNTI group to which each terminal equipment 101 belongs.
The medium used by the network 102 to provide a communication link between the terminal device 101 and the network-side device 103 may be a wired network or a wireless network.
Alternatively, the wireless network or wired network described above uses 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 (Local Area Network, LAN), metropolitan area network (Metropolitan Area Network, MAN), wide area network (Wide Area Network, WAN), mobile, wired or wireless network, 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 (Extensible MarkupLanguage, XML), and the like. All or some of the links may also be encrypted using conventional encryption techniques such as secure sockets layer (Secure Socket Layer, SSL), transport layer security (Transport Layer Security, TLS), virtual private network (Virtual Private Network, VPN), internet protocol security (Internet ProtocolSecurity, IPsec), etc. 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 embodiments of the present disclosure may also be referred to as a UE (User Equipment), and in specific implementation, the terminal Device may be a terminal Device side Device such as a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer), a personal digital assistant (Personal Digital Assistant, PDA), a mobile internet Device (Mobile Internet Device, MID), a Wearable Device (webable Device), or a vehicle-mounted Device, which is to be noted that the specific type of the terminal Device is not limited in the embodiments of the present invention.
The network side device may be a base station, a relay or an access point, etc. The base station may be a 5G or later version base station (e.g., 5G NR NB), or a base station in other communication systems (e.g., eNB base station), and it should be noted that the specific type of the network side device is not limited in the embodiments 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 any number of terminal, network, and network side devices may be provided as desired. The embodiments of the present disclosure are not limited in this regard.
Under the system architecture described above, the embodiments of the present disclosure provide a PDCCH resource allocation method, which may be performed by any electronic device with computing processing capabilities. In some embodiments, the PDCCH resource allocation method provided in the embodiments of the present disclosure may be performed by a network side device of the above 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 device in the system architecture in an interactive manner.
Fig. 2 shows a flowchart of a PDCCH resource allocation method in an 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 the Radio Network Temporary Identifier (RNTI) information allocated when each of a plurality of terminals accesses to the network.
It should be noted that, when each terminal accesses the network, a radio network temporary identifier RNTI is allocated to distinguish the identities of different terminals between the terminal and the base station. In the embodiment of the disclosure, the network accessed by the terminal may be a 4G network, a 5G network, or a network after 5G.
S204, determining the RNTI groups of each terminal according to the RNTI information of each terminal and a plurality of preset RNTI groups, wherein different PDCCH resource candidate sets corresponding to different RNTI groups.
By pre-configuring a plurality of RNTI groups and resource allocation attribute information (for example, PDCCH resource candidate set) corresponding to each RNTI group, after the RNTI information of each terminal is acquired, the RNTI information of each terminal may be matched with the RNTI information in each RNTI group to determine the RNTI group to which each terminal belongs, so as to allocate PDCCH resources to each terminal in the form of an RNTI group.
Different aggregation levels result in different RNTI grouping conditions, so in some embodiments, before determining an RNTI group to which each terminal belongs according to the RNTI information of each terminal and a plurality of preset RNTI groups, the PDCCH resource allocation method provided in the embodiments of the present disclosure may further configure the RNTI groups by: acquiring the quantity of Control Channel Elements (CCEs) contained in PDCCH resources to be allocated and one or more aggregation levels supported by the PDCCH resources to be allocated; and determining the RNTI group corresponding to each aggregation level according to the quantity 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, S204 may query, in each time slot, an RNTI packet to which each terminal belongs under different aggregation levels according to the RNTI information of each terminal.
The aggregation level is the number of CCEs constituting one PDCCH channel; if the aggregation level of a certain PDCCH channel is 4, indicating that the PDCCH channel consists 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 index-consecutive CCEs.
Fig. 3 shows the RNTI packet case when the total number of CCEs is 45 and the aggregation level is 4; fig. 4 shows the RNTI packet case when the total number of CCEs is 45 and the aggregation level is 2.
In some embodiments, the step S204 may further determine, according to the RNTI information of the terminal in different time slots, an RNTI group to which the terminal belongs in different aggregation levels in different time slots, and further allocate PDCCH resources to each terminal according to the RNTI group to which each terminal belongs.
S206, according to the RNTI groups of each terminal, the PDCCH resource allocation is carried out on each terminal.
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 by:
s502, acquiring RNTI groups of each terminal under different aggregation levels;
S504, according to the determined aggregation level, sequentially allocating PDCCH resource candidate sets corresponding to the RNTI groups of the corresponding aggregation level to each terminal not allocated with PDCCH resources.
In some embodiments, PDCCH resource candidate sets of corresponding aggregation level corresponding RNTI packets may be sequentially allocated to each terminal to which no PDCCH resource is allocated in order of aggregation level from large to small.
In some embodiments, S504 may be implemented specifically by the following steps: judging whether the PDCCH resource candidate set positions of the RNTI group corresponding to the current aggregation level are all occupied; if not, sequentially distributing the PDCCH resource candidate set of the RNTI group corresponding to the corresponding aggregation level to each terminal which is not distributed with PDCCH resources according to the PDCCH resource candidate set of the RNTI group corresponding to the current aggregation level; if yes, changing the aggregation level, and sequentially distributing the PDCCH resource candidate set of the corresponding RNTI group of the corresponding aggregation level to each terminal which is not distributed with PDCCH resources according to the PDCCH resource candidate set of the corresponding RNTI group of the changed aggregation level.
It should be noted that, in the above embodiment, 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.
In some embodiments, the PDCCH resource allocation method provided in the embodiments of the present disclosure may determine the RNTI group corresponding to each aggregation level by the following formula:
for CSS:
for USS:and Y is p,-1 ＝n RNTI ≠0；
Wherein L represents an aggregation level of PDCCH resources;representing time slot->A corresponding random amount; />Representing time slot->A corresponding random amount; a and D represent natural numbers; n is n CI Representing a carrier indication value; s represents a search space index; m represents the number of PDCCH resource candidate sets, +.> Representing the corresponding carrier n at an aggregation level of L CI PDCCH candidate set number of (a); />Representation->Is the maximum value of (2); mod represents a rounding-up function; n (N) 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 the CCE index position occupied by the PDCCH candidate, and in the embodiment of the present disclosure, the RNTI groups corresponding to different aggregation levels are determined by means of the above formula.
In specific implementation, a PDCCH resource candidate set of an RNTI packet corresponding to a corresponding aggregation level may be allocated to each terminal not allocated with a PDCCH resource in sequence by: determining RNTI (radio network temporary identifier) to which a terminal belongs according to an aggregation levelA group; reading the corresponding RNTI packet of the terminal Is a value of (2); read +.>Is substituted into the above formulaPerforming CCE position calculation, starting resource allocation attempt, and whether the result of the attempt is successful or not>Re-performing resource allocation attempts until the resource allocation is successful or the value of the RNTI group under all aggregation levels has been tried, wherein L n Indicating the aggregation level, 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 an embodiment of the present disclosure, as shown in fig. 6, specifically including the following steps:
s602, determining the grouping of RNTI under different aggregation levels of different time slot numbers.
The same group of RNTIs have exactly the same candidate set, i.e. the sameThe corresponding CCE locations are identical. Use candidate set calculation formula +.>And carrying out RNTI grouping determination. At a given aggregation level for a given slot number, the number of packets for all RNTIs is +.>Terminals of the same group have exactly the same candidate set, i.e. use the same +.>The calculated CCE locations are identical;
s604, after a terminal accesses a network and acquires RNTI information of the terminal, acquiring RNTI groups to which the terminal belongs under different aggregation levels of different time slots;
S606, in the dynamic scheduling process, parameters are carried out according to the RNTI groupIs provided.
Specifically, the terminal reads the RNTI group corresponding to the current aggregation levelCandidate resource location attempts are made whenAnd when the current aggregation level of the terminal is not available with the candidate set, redundant calculation is not needed, and the quick search of the idle PDCCH resources is realized.
Fig. 7 shows a flow chart for maintaining parameters of PDCCH resource allocation in an embodiment of the present disclosure, where parameters are performed according to RNTI groups under different aggregation levels as shown in fig. 7Specifically including:
s702, initializing all
S704, the terminal determines the belonging RNTI group according to the aggregation level, reads the RNTI groupIs a value of (2);
s706, judgingWhether or not the value of (2) is equal to +.>If->Indicating that all candidate sets of the current aggregation level are occupied, then executing S708; if->S710 is performed;
s708, the terminal changes the aggregation level to re-allocate the resources;
s710, usePerforming CCE position calculation and starting resource allocation attempt;
s712, if the current scheduled terminal is successfully scheduled, the methodThe value of (2) is added with 1, if the current scheduled terminal fails to schedule, the current +.>Occupied by terminals of other groups, also need to be +.>Adding 1 to the value of (1), and re-performing a resource allocation attempt;
S714, judging whether the allocation is successful or not, or whether the RNTI group is under all aggregation levelsAttempts have been made; if yes, then execution S714; if not, returning to execute S704;
s716, ending the flow.
As can be seen from the above, the PDCCH resource allocation method provided in the embodiments of the present disclosure may determine the RNTI group according to the configuration of the networking basic parameters, and store the RNTI group in advance, and after the terminal accesses the network, the terminal may be able to access the network according to the RNTI informationDetermining grouping conditions of different aggregation levels of different time slots without real-time calculation, and grouping according to different aggregation levels by using space timeThe value maintenance is simple and convenient, the quick searching and the allocation of the 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 were assumed 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，Assuming that the network-entering UE has RNTI of 3, 16, 29, 42, 55, 68, 81, 94, 97, 107 ten users, aggregation levels of 4 and 2 can be used.
The first step: determining groups of RNTIs under different aggregation levels of different time slot numbers, the same group RNTIs having identical candidate sets, i.e. identical The corresponding CCE locations are identical. RNTI grouping determination is performed using the following candidate set calculation formula:
at a given time slot number, different aggregation levels have different packets, the number of packets beingTerminals of the same group have exactly the same candidate set, i.e. use the same +.>The calculated CCE locations are identical. The CCE total is given in FIG. 3 aboveAll RNTI packet cases with number 45, slot number 0, aggregation level 4. Wherein the first row is the group number and the rest row is the RNTI value, in the example, 65519 RNTIs are divided into 11 groups, each group is about 5957 RNTIs; fig. 4 above shows all RNTI packet cases with CCE total 45, slot number 0, aggregation level 2, for a total of 22 packets.
And a second step of: the group numbers to which the RNTI belongs under different aggregation levels of different subframes are determined, and for simplicity, the RNTI of the network-entering UE is assumed to be 3, 16, 29, 42, 55, 68, 81, 94, 97 and 107, the table is read to find that all users belong to the group 1 when the time slot is 0 and the aggregation level is 4, the users 3, 29, 55, 81 and 107 belong to the group 1 when the time slot is 0 and the aggregation level is 2, and the users 16, 42, 68, 94 and 97 belong to the group 12.
And a third step of: determining PDCCH resources and initializing Continuing scheduling resource allocation in the above-described order of RNTI and preferentially attempting PDCCH resource allocation from aggregation level 4, users 3, 16, 29, 42, 55, 68 are sequentially allocated +.>Is read to +.>Indicating that resources of aggregation level 4 have no candidate set available, therefore, from user 81, aggregation level 4 cannot be used anymore, only attempts can be made on aggregation level 2 again, and therefore, reading +.>Resource allocation is carried out by taking the value of (a) that the subsequent four users are respectively allocated to the corresponding groups>Reading of the value, user 81 and user 107 correspond +.>User 94 and user 97 correspond->The specific allocation is not described in detail.
Based on the same inventive concept, the embodiments of the present disclosure also provide a PDCCH resource allocation apparatus, as described in the following embodiments. Since the principle of solving the problem of the embodiment of the device is similar to that of the embodiment of the method, the implementation of the embodiment of the device can be referred to the implementation of the embodiment of the method, and the repetition is omitted.
Fig. 8 shows a schematic diagram of a PDCCH resource allocation apparatus in an embodiment of the present disclosure, 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.
Wherein, the RNTI information obtaining module 801 is configured to obtain the radio network temporary identifier RNTI information allocated when each of the plurality of terminals accesses the network; an RNTI grouping module 802, configured to determine, according to RNTI information of each terminal and a plurality of RNTI groups configured in advance, an RNTI group to which each terminal belongs, where different RNTI groups correspond to different PDCCH resource candidate sets; and a resource allocation module 803, configured to allocate PDCCH resources to each terminal according to the RNTI packet to which each terminal belongs.
Here, 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 above modules are the same as the examples and application scenarios implemented by the corresponding steps, but are not limited to the disclosure of the method embodiment. It should be noted that the modules described above may be implemented as part of an apparatus 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 packet determining module 805, configured to determine an RNTI packet corresponding to each aggregation level 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.
Resource candidate set number, ++>Wherein n is CI Representing a carrier indication value, s representing a search space index;representing the corresponding carrier n at an aggregation level of L CI PDCCH candidate set number of (a); />Representation->Is the maximum value of (2); n (N) CCE,p Representing the number of CCEs contained in coreetp; i denotes a CCE index.
In some embodiments, the RNTI packet determination module 805 is further configured to: and inquiring the RNTI groups of each terminal under different aggregation levels according to the RNTI information of each terminal.
In some embodiments, the above-mentioned 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 distributing PDCCH resource candidate sets corresponding to the RNTI groups of the corresponding aggregation level to each terminal not distributed with PDCCH resources.
In some embodiments, the above-mentioned resource allocation module 803 may sequentially allocate, in order from the aggregation level to the low aggregation level, a PDCCH resource candidate set of the RNTI packet corresponding to the corresponding aggregation level to each terminal to which no PDCCH resource is allocated.
In some embodiments, the above-mentioned resource allocation module 803 is further configured to: judging whether the PDCCH resource candidate set positions of the RNTI group corresponding to the current aggregation level are all occupied; if not, sequentially distributing the PDCCH resource candidate set of the RNTI group corresponding to the corresponding aggregation level to each terminal which is not distributed with PDCCH resources according to the PDCCH resource candidate set of the RNTI group corresponding to the current aggregation level; if yes, changing the aggregation level, and sequentially distributing the PDCCH resource candidate set of the corresponding RNTI group of the corresponding aggregation level to each terminal which is not distributed with PDCCH resources according to the PDCCH resource candidate set of the corresponding RNTI group of the changed aggregation level.
In some embodiments, the above-mentioned resource allocation module 803 is further configured to: determining an RNTI group to which the terminal belongs according to the aggregation level; reading the corresponding RNTI packet of the terminalIs a value of (2); read +.>Is substituted into the following formula>Performing CCE position calculation, starting resource allocation attempt, and whether the result of the attempt is successful or not>And (3) adding 1 to the value of the RNTI group, and re-performing resource allocation attempt until the resource allocation is successful or the value of the RNTI group under all aggregation levels is tried:
wherein L represents an aggregation level of PDCCH resources;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, s represents a search space index; n is n CI Representing a carrier indication value; l (L) n Indicating the aggregation level, G n A group number indicating an RNTI group; aggregation level of PDCCH resources; representing the corresponding carrier n at an aggregation level of L CI PDCCH candidate set number of (a); />Representation->Is the maximum value of (2); mod represents a rounding-up function; n (N) 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 resources to be allocated, and the current aggregation level is greater than the changed aggregation level.
Those skilled in the art will appreciate that the various aspects of the present disclosure may be implemented as a system, method, or program product. Accordingly, various aspects of the disclosure may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.
An electronic device 900 according to such an embodiment of the present disclosure is described below with reference to fig. 9. The electronic device 900 shown in fig. 9 is merely an example and should not be construed to limit the functionality and scope of use of embodiments of the present disclosure in any way.
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 storage unit 920, and a bus 930 connecting the different system components (including the storage unit 920 and the processing unit 910).
Wherein the storage unit stores program code that is executable by the processing unit 910 such that the processing unit 910 performs steps according to various exemplary embodiments of the present disclosure described in the above-described "exemplary methods" section of the present specification. For example, the processing unit 910 may perform the following steps of the method embodiment described above: acquiring the Radio Network Temporary Identifier (RNTI) information allocated when a plurality of terminals access to a network respectively; determining an RNTI group to which each terminal belongs according to RNTI information of each terminal and a plurality of preset RNTI groups, wherein different PDCCH resource candidate sets corresponding to different RNTI groups; and distributing PDCCH resources to each terminal according to the RNTI group to which each terminal belongs.
The storage unit 920 may include readable media in the form of volatile storage units, such as Random Access Memory (RAM) 9201 and/or cache memory 9202, and may further include Read Only Memory (ROM) 9203.
The storage unit 920 may also include a program/utility 9204 having a set (at least one) of program modules 9205, such program modules 9205 include, but are not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
The bus 930 may be one or more 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.), one or more devices that enable a user to interact with the electronic device 900, and/or any devices (e.g., routers, modems, etc.) that enable the electronic device 900 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 950. Also, electronic device 900 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 960. As shown, the network adapter 960 communicates with other modules of the electronic device 900 over the bus 930. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 900, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, 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 (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, a computer-readable storage medium, which may be a readable signal medium or a readable storage medium, is also provided. Fig. 10 illustrates a schematic diagram of a computer-readable storage medium in an embodiment of the present disclosure, where a program product capable of implementing the method of the present disclosure is stored on the computer-readable storage medium 1000 as illustrated in fig. 10. In some possible implementations, 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 carry out the steps according to the various exemplary embodiments of the disclosure as described in the "exemplary methods" section 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 this disclosure, a computer readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. 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, the 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, the 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 and 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, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, 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., connected via the Internet using an Internet service provider).
It should be noted that although in the above detailed description several modules or units of a 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 in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
Furthermore, although the steps of the methods in the present disclosure are depicted in a particular order in the drawings, this does not require or imply that the steps must be performed in that particular order or that all illustrated steps be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
From the description of the above embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, 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 (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a mobile terminal, or a network device, etc.) to perform 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 adaptations, uses, or adaptations of the disclosure following the general 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 (8)

1. A PDCCH resource allocation method, comprising:
acquiring the Radio Network Temporary Identifier (RNTI) information allocated when a plurality of terminals access to a network respectively;
inquiring the RNTI groups of each terminal under different aggregation levels according to the RNTI information of each terminal and a plurality of preset RNTI groups under different aggregation levels of different time slots, wherein the RNTI groups of each terminal under different aggregation levels correspond to different PDCCH resource candidate sets;
according to the RNTI group to which each terminal belongs, PDCCH resource allocation is carried out on each terminal;
in each dynamic scheduling process of resources, each RNTI group carries out parameters respectivelyIs maintained, said parameter->Indicating the allocated PDCCH resources per RNTI packet, said parameter +.>The initial value of (2) is 0, and after each attempt of resource scheduling of the current aggregation level, the parameter is +.>The value of (2) is added to 1 when the parameter +.>The value of (2) is +.>When the PDCCH resource candidate set position of the corresponding RNTI group of the current aggregation level of the terminal is fully occupied, the position of the PDCCH resource candidate set is +.>Representation->Maximum value of>Representing the corresponding carrier n at an aggregation level of L CI PDCCH candidate set number of (a);
the method for allocating PDCCH resources to each terminal according to the RNTI group to which each terminal belongs comprises the following steps:
Acquiring RNTI groups of each terminal under different aggregation levels;
judging whether the PDCCH resource candidate set positions of the RNTI group corresponding to the current aggregation level are all occupied according to the determined aggregation level;
if not, sequentially distributing the PDCCH resource candidate set of the RNTI group corresponding to the corresponding aggregation level to each terminal which is not distributed with PDCCH resources according to the PDCCH resource candidate set of the RNTI group corresponding to the current aggregation level;
if yes, changing the aggregation level, and sequentially distributing the PDCCH resource candidate set of the corresponding RNTI group of the corresponding aggregation level to each terminal which is not distributed with PDCCH resources according to the PDCCH resource candidate set of the corresponding RNTI group of the changed aggregation level.
2. The PDCCH resource allocation method of claim 1, wherein before inquiring the RNTI packet to which each terminal belongs under different aggregation levels under each time slot according to the RNTI information of each terminal and the plurality of RNTI packets under different aggregation levels of different time slots which are preconfigured, the method further comprises:
acquiring the quantity of Control Channel Elements (CCEs) contained in PDCCH resources to be allocated and one or more aggregation levels supported by the PDCCH resources to be allocated;
And determining an RNTI group corresponding to each aggregation level according to the quantity of CCEs contained in the PDCCH resources to be allocated and one or more aggregation levels supported by the PDCCH resources to be allocated, wherein the RNTI with the same PDCCH resource candidate set is one RNTI group.
3. The PDCCH resource allocation method of claim 2, wherein the RNTI group corresponding to each aggregation level is determined by the following formula:
for CSS:
for USS:and->
Wherein L represents an aggregation level of PDCCH resources;representing time slot->A corresponding random amount; />Representing time slotsA corresponding random amount; a is that p And D represents a natural number; n is n CI Representing a carrier indication value; s represents a search space index; m represents the number of PDCCH resource candidate sets, +.> Representing the corresponding carrier n at an aggregation level of L CI PDCCH candidate set number of (a); />Representation->Is the maximum value of (2); mod represents a rounding-up function; n (N) CCE,p Representing the number of CCEs contained in the control resource set p; i represents a CCE index; CSS and USS represent search space types.
4. The PDCCH resource allocation method of claim 1, wherein allocating a PDCCH resource candidate set of a corresponding aggregation level corresponding RNTI packet for each terminal not allocated PDCCH resources in turn comprises:
Determining an RNTI group to which the terminal belongs according to the aggregation level;
reading the corresponding RNTI packet of the terminalIs a value of (2);
to be read outIs substituted into the following formula>Performing CCE position calculation, starting resource allocation attempt, and whether the result of the attempt is successful or not>And (3) adding 1 to the value of the RNTI group, and re-performing resource allocation attempt until the resource allocation is successful or the value of the RNTI group under all aggregation levels is tried:
for CSS:
for USS:and->
Wherein L represents an aggregation level of PDCCH resources;representing time slot->A corresponding random amount; />Representing time slotsA corresponding random amount; a is that p And D represents a natural number; n is n CI Representing a carrier indication value; s represents a search space index; m represents the number of PDCCH resource candidate sets, +.> Representing the corresponding carrier n at an aggregation level of L CI PDCCH candidate set number of (a); />Representation->Is the maximum value of (2); mod represents a rounding-up function; n (N) CCE,p Representing the number of CCEs contained in the control resource set p; i represents a CCE index; CSS and USS represent search space types.
5. The PDCCH resource allocation method of claim 2, wherein the current aggregation level and the changed aggregation level are both the PDCCH resource support aggregation level to be allocated, and the current aggregation level is greater than the changed aggregation level.
6. A PDCCH resource allocation apparatus, comprising:
an RNTI information acquisition module, configured to acquire radio network temporary identifier RNTI information allocated when each of a plurality of terminals accesses a network;
an RNTI grouping module, configured to query, in each time slot, an RNTI group to which each terminal belongs in different aggregation levels according to RNTI information of each terminal and a plurality of RNTI groups pre-configured in different aggregation levels in different time slots, where different RNTI groups correspond to different PDCCH resource candidate sets;
the resource allocation module is used for allocating PDCCH resources to each terminal according to the RNTI group to which each terminal belongs;
in each dynamic scheduling process of resources, each RNTI group carries out parameters respectivelyIs maintained, said parameter->Indicating the allocated PDCCH resources per RNTI packet, said parameter +.>The initial value of (2) is 0, and after each attempt of resource scheduling of the current aggregation level, the parameter is +.>The value of (2) is added to 1 when the parameter +.>The value of (2) is +.>When the PDCCH resource candidate set position of the corresponding RNTI group of the current aggregation level of the terminal is fully occupied, the position of the PDCCH resource candidate set is +.>Representation->Maximum value of>Representing the corresponding carrier n at an aggregation level of L CI PDCCH candidate set number of (a);
wherein the resource allocation module is further configured to:
acquiring RNTI groups of each terminal under different aggregation levels;
judging whether the PDCCH resource candidate set positions of the RNTI group corresponding to the current aggregation level are all occupied according to the determined aggregation level;
if not, sequentially distributing the PDCCH resource candidate set of the RNTI group corresponding to the corresponding aggregation level to each terminal which is not distributed with PDCCH resources according to the PDCCH resource candidate set of the RNTI group corresponding to the current aggregation level;
if yes, changing the aggregation level, and sequentially distributing the PDCCH resource candidate set of the corresponding RNTI group of the corresponding aggregation level to each terminal which is not distributed with PDCCH resources according to the PDCCH resource candidate set of the corresponding RNTI group of the changed aggregation level.
7. 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 one of claims 1 to 5 via execution of the executable instructions.
8. 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 to 5.
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