CN114071472A

CN114071472A - Resource allocation method and device, and communication equipment

Info

Publication number: CN114071472A
Application number: CN202010776011.4A
Authority: CN
Inventors: 庾小峰
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2022-02-18
Also published as: WO2022028166A1

Abstract

The embodiment of the application provides a resource allocation method, a device and communication equipment, which are used for determining the corresponding spectrum efficiency of each downlink control information DCI format under at least one control channel element CCE aggregation level and generating a DCI format, spectrum efficiency and CCE aggregation level mapping table; and determining the CCE aggregation level of the PDCCH from the mapping table according to the first spectrum efficiency of the PDCCH and the DCI format of the first DCI carried by the PDCCH. The CCE aggregation level is dynamically determined according to the DCI format, so that the PDCCH resources are reasonably distributed, the number of users which can be distributed in a single time slot is increased, and the capacity performance of the system is effectively improved.

Description

Resource allocation method and device, and communication equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a resource allocation method and apparatus, and a communication device.

Background

The 5G New air interface (5G New Roadio, 5G NR) communication technology defines three scenarios: enhanced Mobile Broadband (eMBB), Ultra-Reliable and Low-delay Communication (uRLLC), and Massive Machine Type Communication (mMTC), which all put forward higher requirements for NR system capacity.

Similar to Long Term Evolution (LTE), the NR system still uses a Physical Downlink Control Channel (PDCCH) to carry Downlink Control Information (DCI), which is composed of a set of Physical resource elements. Compared with the LTE system, the system bandwidth of the NR system is large (the maximum bandwidth may be 400MHz), and if the PDCCH still occupies the entire bandwidth, the resource is seriously wasted, so that the complexity of blind detection of User Equipment (UE) is also increased.

Therefore, in the NR system, the minimum resource unit and the number of resource units that can be allocated by the PDCCH are defined as integer multiples (1, 2, 4, 8, 16) of a Control Channel Element (CCE), which is referred to as a CCE aggregation level (see table 1), i.e. the performance of the PDCCH is measured by the CCE aggregation level size: under the condition that the length of a PDCCH code stream is determined, the higher the CCE aggregation level is, the better the performance of the PDCCH is, the lower the requirement on the channel condition is, but the more resources occupying a control channel are, the fewer the number of users scheduled in a single time slot is; the lower the CCE aggregation level is, the worse the performance of the PDCCH is, which may result in an increase in the probability of missed detection, and once the control information is missed detected, the transmission of the service data is also in error, which reduces the throughput performance of the UE.

TABLE 1 CCE aggregation levels supported by NR systems and the corresponding CCE numbers

Aggregation Level	Number of CCEs
		1	1
2	2
		4	4
8	8
		16	16

Like LTE, in the NR system, PDCCH bearer information is divided into common control information and dedicated control information according to different scopes, and corresponding physical resource areas are also divided into a common search space and a dedicated search space. The NR protocol gives clear limits for the two types of aggregation levels assignable in the search space, as well as the number of searches at each aggregation level, the total number of searches: please refer to tables 2, 3, and 4, where table 2 shows CCE aggregation levels supported by the NR system and the number of candidate sets supported by each aggregation level (i.e., the number of Search times), table 3 shows the aggregation levels on Type0-PDCCH CSS, Type0A-PDCCH CSS, and Type2-PDCCH CSS of the Common Search Space (CSS) and the number of candidate sets corresponding to each aggregation level, table 4 shows the maximum number of candidate sets (i.e., the total number of Search times) that can be searched by the UE in a single slot, and table 5 shows the maximum total number of CCEs that can be searched by the UE in a single slot.

Table 2 candidate set configuration supported by different aggregation levels of NR system

CCE Aggregation Level	Number of Candidates
		1	0,1,2,3,4,5,6,8
2	0,1,2,3,4,5,6,8
		4	0,1,2,3,4,5,6,8
8	0,1,2,3,4,5,6,8
		16	0,1,2,3,4,5,6,8

TABLE 3 aggregation level and corresponding candidate set number restrictions on CSS

CCE Aggregation Level	Number of Candidates
		4	4
8	2
		16	1

TABLE 4 maximum number of candidate sets supported by UE in time slot

TABLE 5 maximum number of CCEs supported by the UE in a slot

By combining the analysis, the PDCCH resources are reasonably and efficiently distributed, and the number of users scheduled in a single time slot is increased, which is the key for improving the capacity and the performance of the NR system. Therefore, how to reasonably allocate PDCCH resources is a problem that needs to be solved urgently at present.

Disclosure of Invention

The embodiment of the application provides a resource allocation method and communication equipment, which are used for solving the problem of unreasonable resource allocation of a PDCCH (physical Downlink control channel) so as to meet the performance requirement of a 5G NR (noise-and-noise ratio) system on system capacity.

The embodiment of the application provides the following specific technical scheme:

in a first aspect, an embodiment of the present application provides a resource allocation method, including:

determining the corresponding spectrum efficiency of each downlink control information DCI format under at least one control channel unit CCE aggregation level, and generating a mapping table of the DCI format, the spectrum efficiency and the CCE aggregation level;

and determining the CCE aggregation level of the PDCCH from the mapping table according to the first spectrum efficiency of the PDCCH and the DCI format of the first DCI carried by the PDCCH.

In one possible design, the determining the corresponding spectral efficiency of each DCI format under at least one CCE aggregation level includes:

determining the bit length of each DCI format according to the configuration parameters of the PDCCH;

and determining the corresponding spectral efficiency of each DCI format under the at least one CCE aggregation level according to the bit length.

In one possible design, the at least one CCE aggregation level is a CCE aggregation level where the number of searches in CCE aggregation levels supported by the NR system is configured to be non-zero.

In one possible design, each DCI format is DCI format0_0, or DCI format0_ 1, or DCI format 1_0, or DCI format 1_ 1.

In one possible design, the determining, according to the first spectral efficiency of the downlink physical control channel PDCCH and the DCI format of the first DCI carried by the PDCCH, the CCE aggregation level of the PDCCH from the mapping table includes:

determining at least one spectrum efficiency corresponding to the DCI format of the first DCI under the at least one CCE aggregation level according to the mapping table;

determining a second spectral efficiency which has the smallest spectral efficiency difference value with the current channel and is smaller than the first spectral efficiency from the at least one spectral efficiency;

determining a CCE aggregation level corresponding to the DCI format of the first DCI and the second spectrum efficiency from the mapping table; and taking the corresponding CCE aggregation level as the CCE aggregation level of the PDCCH.

In a second aspect, an embodiment of the present application provides a communication device, including: memory, transceiver, processor:

the memory for storing a computer program;

the transceiver is used for transceiving data under the control of the processor;

the processor is used for reading the computer program in the memory and executing the following operations:

In one possible design, when the processor is configured to determine the corresponding spectral efficiency of each downlink control information DCI format in at least one control channel element CCE aggregation level, the processor is specifically configured to:

In one possible design, the processor is configured to determine, from the mapping table, a CCE aggregation level of a downlink physical control channel (PDCCH) according to a first spectral efficiency of the PDCCH and a DCI format of a first DCI carried by the PDCCH, and specifically configured to:

In a third aspect, an embodiment of the present application provides a resource allocation apparatus, including:

the first processing unit is used for determining the corresponding spectrum efficiency of each downlink control information DCI format under at least one control channel unit CCE aggregation level and generating a mapping table of the DCI format, the spectrum efficiency and the CCE aggregation level;

and a second processing unit, configured to determine, according to the first spectral efficiency of a downlink physical control channel PDCCH and a DCI format of a first DCI carried by the PDCCH, a CCE aggregation level of the PDCCH from the mapping table.

In a fourth aspect, a computer-readable storage medium is provided, which stores computer instructions that, when executed on a computer, cause the computer to perform the method as described in the first aspect and any possible embodiment.

In a fifth aspect, a computer program product containing instructions is provided, which when run on a computer causes the computer to perform a method of resource allocation as described in the various possible implementations above.

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.

Based on the above technical solution, the embodiment of the present application provides a resource allocation method, which determines the corresponding spectrum efficiency of each downlink control information DCI format under at least one control channel element CCE aggregation level, and generates a DCI format, spectrum efficiency, and CCE aggregation level mapping table; and determining the CCE aggregation level of the PDCCH from the mapping table according to the first spectrum efficiency of the PDCCH and the DCI format of the first DCI carried by the PDCCH. The CCE aggregation level is dynamically determined according to the DCI format, so that the PDCCH resources are reasonably distributed, the number of users which can be distributed in a single time slot is increased, and the capacity performance of the system is effectively improved.

Drawings

Fig. 1 is an application scenario diagram provided in an embodiment of the present application;

fig. 2 is a schematic flowchart of a resource allocation method according to an embodiment of the present application;

fig. 3 is a schematic flowchart of generating a DCI format, spectrum efficiency, and CCE aggregation level mapping table according to an embodiment of the present application;

fig. 4 is a schematic flowchart illustrating a process of determining a spectrum efficiency corresponding to current scheduling information according to an embodiment of the present application;

fig. 5 is a schematic flowchart illustrating a process of determining a currently scheduled CCE aggregation level according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a resource allocation apparatus according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. In the present application, the embodiments and features of the embodiments may be arbitrarily combined with each other without conflict. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.

The terms "first" and "second" in the description and claims of the present application and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the term "comprises" and any variations thereof, which are intended to cover non-exclusive protection. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. The "plurality" in the present application may mean at least two, for example, two, three or more, and the embodiments of the present application are not limited.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document generally indicates that the preceding and following related objects are in an "or" relationship unless otherwise specified.

The following briefly introduces techniques related to the technical problems solved by the present application.

In order to solve the foregoing technical problem, the following several PDCCH resource allocation strategies are proposed in the related art:

scheme 1: determining a CCE aggregation level of a UE level based on downlink measurement, dividing Channel Quality Information (CQI) fed back by the UE into a plurality of intervals according to a simulation result obtained by a preset algorithm, wherein each interval corresponds to one CCE aggregation level, and determining the CCE aggregation level directly according to the interval corresponding to the CQI of the current stage during PDCCH resource allocation.

Scheme 2: mapping the CQI into Spectral Efficiency (SE) on the basis of the scheme 1, smoothing the SE mapped after reporting the CQI each time, quantizing the smoothed result into a plurality of grades, wherein each grade corresponds to a CCE aggregation grade, and determining the CCE aggregation grade according to the Spectral efficiency mapped by the CQI in the current stage during PDCCH resource allocation.

Scheme 3: on the basis of the schemes 1 and 2, a Physical Uplink Control Channel (PUCCH) and a Physical downlink shared channel (PUSCH) activation detection result is introduced, the detection result is used to correct the SE after the smoothing processing, for example, if the PUCCH or PUSCH detection result is activated, the SE is corrected upwards (i.e., the CCE aggregation level where the current CQI is located is adjusted downwards), otherwise, the SE is corrected downwards (i.e., the CCE aggregation level where the current CQI is located is adjusted upwards), the corrected result is quantized to several levels, each level corresponds to one CCE aggregation level, and the CCE aggregation level is determined by mapping the CQI at the current level and correcting the obtained SE during PDCCH resource allocation.

The length of DCI in the NR system is variable, there are multiple factors (e.g., DCI format, parameter configuration, etc.) that affect the DCI length, DCI code streams of different lengths are carried on the same number of CCEs, the corresponding code rates or spectral efficiencies are distinct, and the corresponding demodulation performance requirements are also distinct. If the code rate is low, the demodulation performance requirement is low, CCE waste can be caused, so that the number of users scheduled on a single time slot is small, and the network system capacity is reduced; if the code rate is higher, the demodulation performance requirement is high, which causes the PDCCH error rate to be higher, raises the network packet loss rate and increases the network delay. However, the core of the existing three technical solutions lies in how to determine the CCE aggregation level at the UE level, and after the CCE aggregation level at the UE level is determined, the determined CCE aggregation level is directly used when the PDCCH is scheduled, without considering the influence of the DCI bit length to be carried by the PDCCH on the system performance. Therefore, in the prior art, when the PDCCH resource is allocated, the appropriate CCE aggregation level cannot be dynamically matched according to the DCI bit length.

In order to solve the above technical problem, an embodiment of the present application provides a resource allocation method, which determines a corresponding spectrum efficiency of each downlink control information DCI format under at least one control channel element CCE aggregation level, and generates a DCI format, a spectrum efficiency, and a mapping table of CCE aggregation levels; and determining the CCE aggregation level of the PDCCH from the mapping table according to the first spectrum efficiency of the PDCCH and the DCI format of the first DCI carried by the PDCCH. The CCE aggregation level is dynamically determined according to the DCI format, so that the PDCCH resources are reasonably distributed, the number of users which can be distributed in a single time slot is increased, and the capacity performance of the system is effectively improved.

In order to facilitate understanding of the technical solutions provided in the embodiments of the present application, some brief descriptions are provided below for application scenarios used in the technical solutions provided in the embodiments of the present application, and it should be noted that the application scenarios described below are only used for illustrating the embodiments of the present invention and are not limited. In specific implementation, the technical scheme provided by the embodiment of the application can be flexibly applied according to actual needs.

Please refer to fig. 1, where fig. 1 is an application scenario to which the technical solution of the embodiment of the present application can be applied. In the application scenario shown in fig. 1, the terminal device 10 and the network-side device 11 are included, where the terminal device 10 may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, or the like. The network side device 11 may be an access network device, a core network device, and the like, and the access network device may be a commonly used Base station, for example, an evolved Node Base station (eNB), and may also be a network side device in a 5G system (for example, a next generation Base station (gNB) or a Transmission and Reception Point (Transmission and Reception Point) and the like).

When detecting the configuration or change of the PDCCH parameter of the physical downlink control channel, the network side device 11 determines the spectral efficiency corresponding to each DCI format in the downlink control information at least one CCE aggregation level, and generates a mapping table of the DCI format, the spectral efficiency, and the CCE aggregation level.

Network side equipment 11 receives a spectrum efficiency SE obtained by mapping CQI reported by terminal equipment 10, corrects the spectrum efficiency, and determines a CCE aggregation level of the PDCCH from the mapping table according to the corrected SE and a DCI format of a first DCI carried by the PDCCH when PDCCH scheduling occurs. The CCE aggregation level is dynamically determined according to the DCI format, so that the PDCCH resources are reasonably distributed, the number of users which can be distributed in a single time slot is increased, and the capacity performance of the system is effectively improved.

To further illustrate the technical solutions provided by the embodiments of the present application, the following detailed description is made with reference to the accompanying drawings and the detailed description. Although the embodiments of the present application provide the method operation steps as shown in the following embodiments or figures, more or less operation steps may be included in the method based on the conventional or non-inventive labor. In steps where no necessary causal relationship exists logically, the order of execution of the steps is not limited to that provided by the embodiments of the present application. The method can be executed in sequence or in parallel according to the method shown in the embodiment or the figure when the method is executed in an actual processing procedure or a device.

A specific implementation process of a resource allocation method provided in the embodiment of the present application is described below with reference to fig. 2.

Referring to fig. 2, fig. 2 is a schematic flow chart of a resource allocation method according to an embodiment of the present application, where the flow chart of the resource allocation method in fig. 2 is described as follows:

step 201: determining the corresponding spectrum efficiency of each downlink control information DCI format under at least one control channel unit CCE aggregation level, and generating a mapping table of the DCI format, the spectrum efficiency and the CCE aggregation level.

Preferably, when the PDCCH parameter is configured or changed, the corresponding spectrum efficiency of each downlink control information DCI format under at least one control channel element CCE aggregation level may be determined.

It is to be understood that the at least one CCE aggregation level is a CCE aggregation level where the number of searches in CCE aggregation levels supported by the NR system is configured to be non-zero. For example, aggregation levels 1, 2, 4, 8, 16. The at least CCE aggregation level may be a CCE aggregation level with any search order configuration different from zero, or may be a set of CCE aggregation levels with all search order configurations different from zero.

It should be appreciated that the communication device completes PDCCH parameter configuration for the user terminal when it accesses the network.

The DCI format may be one or more of DCI format0_0, DCI format0_ 1, DCI format 1_0, and DCI format 1_ 1. In the NR system, DCI format0_0 and DCI format0_ 1 are used to schedule a Physical Uplink Shared Channel (PUSCH) resource; the DCI format 1_0 and the DCI format 1_1 are used to schedule a Physical Downlink Shared Channel (PDSCH) resource.

In a possible implementation manner, the determining the corresponding spectral efficiency of each downlink control information DCI format under at least one control channel element CCE aggregation level includes: determining the bit length of each DCI format according to the configuration parameters of the PDCCH; and determining the corresponding spectral efficiency of each DCI format under the at least one CCE aggregation level according to the bit length.

Specifically, the process for determining the bit length of each DCI format according to the configuration parameters of the PDCCH may be: and determining whether each field in the DCI exists and the corresponding length thereof according to the UE-level parameter configuration carried in the PDCCH configuration information, wherein the sum of the lengths of the fields is the bit length of the DCI.

It should be noted that fields of different DCI formats differ from one another, and field contents differ from one another.

For example, taking DCI format 1_0 as an example, DCI format 1_0 includes: frequency Domain Resource allocation indication (FDRA), Time Domain Resource allocation indication (TDRA), Virtual Resource Block (VRB) to Physical Resource Block (PRB) mapping whether interleaving (VRB to PRB mapping), Modulation and Coding strategy (Modulation and Coding Scheme), Hybrid Automatic Repeat reQuest (HARQ) redundancy version, and System Information indication (System Information Indicator). The length of the frequency domain resource allocation indication is related to the downlink (BWP) size, the length of the time domain resource allocation indication is 4 bits, the length of the VRB to PRB mapping is 1 bit, the length of the modulation and coding strategy is 5 bits, the length of the HARQ redundancy version is 2 bits, and the length of the System Information Indicator is 1 bit. When determining the bit length of the DCI format 1_0, the communication device first determines the length of the frequency domain resource allocation indication according to the BWP size in the UE-level configuration parameters of the PDCCH, and then sequentially determines whether other fields in the DCI format 1_0 exist and the length of each field, and the bit length of each field is added to obtain the bit length of the DCI format 1_ 0.

Optionally, the communication device (e.g., the network-side device described above) may calculate the corresponding spectral efficiency of each DCI format in the DCI at the at least one CCE aggregation level at the time of initial access of a user, handover access, reestablishment establishment, BWP handover, change of related parameters, and the like.

In a possible implementation manner, after determining, according to the configuration parameter of the PDCCH, a bit length of each DCI format, and determining, according to the bit length, a corresponding spectral efficiency of each DCI format under the at least one CCE aggregation level, the communication device may generate a mapping table of the DCI formats, the spectral efficiencies, and the CCE aggregation levels.

For example, assuming that the aggregation levels with the non-zero search times are aggregation levels 1, 2, 4, 8, and 16, the communication device calculates the spectral efficiency carried at the aggregation levels 1, 2, 4, 8, and 16 For each DCI Format, and stores the DCI _ Format x _ x _ SE _ For _ cclevel x according to the DCI Format and the CCE aggregation level, where the DCI _ Format x _ x _ SE _ For _ cclevel x is a table For storing the spectral efficiency of each DCI Format at each aggregation level.

For a specific process of generating a spectrum efficiency and CCE aggregation level mapping table, refer to fig. 3, where fig. 3 is a schematic diagram of a process of generating a DCI format, a spectrum efficiency and a CCE aggregation level mapping table provided in an embodiment of the present application, where the process is to calculate a spectrum efficiency corresponding to each DCI format under different aggregation levels in a current configuration, and the following is a related description of the process.

Step 301: and detecting whether the PDCCH parameters are configured or changed.

Step 302: and DCI Format screening.

Preferably, four DCI formats, i.e., DCI format0_0, DCI format0_ 1, DCI format 1_0, and DCI format 1_1, are screened from the DCI formats supported by the NR system.

Step 303: CCE aggregation level filtering.

Screening CCE aggregation levels with the search times configured to be not 0 according to the four DCI Formats screened in the step 302;

step 304: and determining the DCI bit length.

Specifically, at the time of initial access, handover access, re-establishment access, BWP handover, change of related parameters, etc., according to the BWP carried in the PDCCH configuration information, it is determined whether each field in the DCI exists and its corresponding length, and finally the bit length of the DCI is determined.

Step 305: and calculating the spectral efficiency.

After step 301-304 is executed, traversing is performed For each DCI Format and CCE aggregation level one by one, respectively calculating the spectral efficiency under the CCE aggregation levels of all non-zero search times, and storing the DCI Format and the CCE aggregation levels in a two-dimensional table DCI _ Format x _ SE _ For _ ccleevel x For subsequently determining the CCE aggregation level corresponding to each PDCCH scheduling.

Step 202: and determining the CCE aggregation level of the PDCCH from the mapping table according to the first spectrum efficiency of the PDCCH and the DCI format of the first DCI carried by the PDCCH.

It should be understood that the first spectral efficiency is mapped and modified according to the CQI reported by the current UE (e.g., during a call service). The CCE aggregation level of the PDCCH may be understood as the number of CCE resources allocated to the user equipment UE currently accessing the network by the communication device. The first DCI may be understood as scheduling information issued by the communication device to the UE.

In a possible implementation manner, the determining, according to the first spectral efficiency of the downlink physical control channel PDCCH and the DCI format of the first DCI carried by the PDCCH, the CCE aggregation level of the PDCCH from the mapping table includes: determining at least one spectrum efficiency corresponding to the DCI format of the first DCI under the at least one CCE aggregation level according to the mapping table; determining a second spectral efficiency which has the smallest spectral efficiency difference value with the current channel and is smaller than the first spectral efficiency from the at least one spectral efficiency; determining a CCE aggregation level corresponding to the DCI format of the first DCI and the second spectrum efficiency from the mapping table; and taking the corresponding CCE aggregation level as the CCE aggregation level of the PDCCH.

Exemplarily, when PDCCH scheduling occurs, the communication device determines that the current scheduling message is a UE-level dedicated scheduling message; determining a DCI format in the scheduling information and spectral efficiencies SE _1, SE _2, SE _4, SE _8 and SE _16 under each aggregation level corresponding to the DCI format; determining the frequency spectrum efficiency SE _ X obtained after CQI mapping reported by the current UE and correction; comparing the SE _ X with SE _1, SE _2, SE _4, SE _8 and SE _16 respectively to find out the spectral efficiency SE _ i which is closest to but smaller than the SE _ X; and determining the aggregation level corresponding to the spectrum efficiency SE _ i as the CCE aggregation level of the PDCCH scheduling according to the current DCI Format, the spectrum efficiency SE _ i and the table DCI _ Format x _ x _ SE _ For _ CCELEvel x.

Wherein, the definition and the meaning of the related variables are as follows:

SE _ 1: spectrum efficiency corresponding to aggregation level 1 under the condition that the DCI format is determined;

SE _ 2: aggregating the spectral efficiency corresponding to level 2 if the DCI format is determined;

SE _ 4: spectrum efficiency corresponding to aggregation level 4 under the condition that the DCI format is determined;

SE _ 8: spectrum efficiency corresponding to aggregation level 8 under the condition that the DCI format is determined;

SE _ 16: spectrum efficiency corresponding to aggregation level 16 in the case that the DCI format is determined;

SE _ i: the frequency spectrum efficiency when the DCI format is determined and the aggregation level is uncertain, and the value of i may be 1, 2, 4, 8 and 16;

SE _ X: the corrected spectral efficiency is a result obtained by correcting the SE mapped by the CQI fed back by the UE based on the current channel measurement (for example, PUCCH or PUSCH detection result), and is used for indicating the channel quality of the current channel.

For a specific process of determining the spectral efficiency of the current scheduling in the possible embodiments, see fig. 4, where fig. 4 is a schematic flow chart illustrating a process of determining the spectral efficiency corresponding to the current scheduling information, the purpose of this process is to determine the spectral efficiency that best matches the current channel quality when PDCCH scheduling occurs, and the process is triggered by a PDCCH scheduling message, and the specific process is as follows:

step 401: and scheduling message type screening.

It should be appreciated that the solution provided by the present application is suitable for addressing the capacity performance of the system, and therefore, preferably, for UE-level dedicated scheduling messages. Thus, when PDCCH scheduling occurs, UE-level dedicated scheduling messages are preferentially selected.

Step 402: and acquiring the spectrum efficiency of the current DCI format under each aggregation level.

In a possible implementation manner, after determining the DCI Format of the current scheduling message according to step 401, the table may be looked up according to the DCI Format DCI _ Format x _ x _ SE _ For _ cclevel x to obtain the spectral efficiencies SE _1, SE _2, SE _4, SE _8, and SE _16 at each aggregation level.

Step 403: and comparing the corrected spectral efficiency SE _ X with SE _1, SE _2, SE _4, SE _8 and SE _16 respectively, and finding out the spectral efficiency SE _ i which is closest to but smaller than SE _ X.

After determining the spectrum efficiency SE _ i most suitable for the current channel condition, determining a CCE aggregation level scheduled by a PDCCH is required, and this process is also triggered by a PDCCH scheduling message, please refer to fig. 5, where fig. 5 is a schematic diagram of a process for determining a CCE aggregation level currently scheduled according to an embodiment of the present application; the process is described as follows:

step 501: and determining that the current scheduling message is the UE-level dedicated scheduling message.

See the description of step 401 for a description of step 501.

Step 502: determining a CCE aggregation level for a current schedule.

In a possible implementation manner, according to the DCI Format and the spectrum efficiency SE _ i reverse lookup table DCI _ Format x _ x _ SE _ For _ ccleevel x, finding the CCE aggregation level corresponding to the spectrum efficiency SE _ i as the CCE aggregation level of the current PDCCH scheduling.

Based on the same inventive concept, an embodiment of the present application provides a resource allocation apparatus (for example, the foregoing network side device), please refer to fig. 6, where the apparatus includes:

a first processing unit 601, configured to determine a spectral efficiency corresponding to each DCI format of downlink control information at least one CCE aggregation level, and generate a mapping table of the DCI format, the spectral efficiency, and the CCE aggregation level;

a second processing unit 602, configured to determine, according to the first spectral efficiency of the downlink physical control channel PDCCH and the DCI format of the first DCI carried by the PDCCH, a CCE aggregation level of the PDCCH from the mapping table.

The division of the modules in the embodiments of the present application is schematic, and only one logical function division is provided, and in actual implementation, there may be another division manner, and in addition, each functional module in each embodiment of the present application may be integrated in one processor, may also exist alone physically, or may also be integrated in one module by two or more modules. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.

Based on the same inventive concept, an embodiment of the present application provides a communication device (for example, the aforementioned network-side device), please refer to fig. 7, where the communication device includes at least one processor 701 and a memory 702 connected to the at least one processor, a specific connection medium between the processor 701 and the memory 702 is not limited in this embodiment of the present application, a connection between the processor 701 and the memory 702 through a bus 700 is taken as an example in fig. 7, the bus 700 is shown by a thick line in fig. 7, and a connection manner between other components is only schematically illustrated and is not taken as a limitation. The bus 700 may be divided into an address bus, a data bus, a control bus, etc., and is shown in fig. 7 with only one thick line for ease of illustration, but does not represent only one bus or one type of bus.

The communication device in this embodiment of the application may further include a transceiver 703, where the transceiver 703 is, for example, an internet access, and the communication device may receive data or transmit data through the transceiver 703.

In the embodiment of the present application, the memory 702 stores instructions executable by the at least one processor 701, and the at least one processor 701 may execute the steps included in the foregoing resource allocation method by executing the instructions stored in the memory 702.

The processor 701 is a control center of the communication device, and may connect various parts of the entire device by using various interfaces and lines, and perform various functions and process data of the communication device by operating or executing instructions stored in the memory 702 and calling data stored in the memory 702, thereby performing overall monitoring on the communication device. Alternatively, the processor 701 may include one or more processing units, and the processor 701 may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, application programs, and the like, and the modem processor mainly handles wireless communication. It will be appreciated that the modem processor described above may not be integrated into the processor 701. In some embodiments, processor 701 and memory 702 may be implemented on the same chip, or in some embodiments, they may be implemented separately on separate chips.

The processor 701 may be a general-purpose processor, such as a Central Processing Unit (CPU), digital signal processor, application specific integrated circuit, field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like, that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the resource allocation method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

Memory 702, which is a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules. The Memory 702 may include at least one type of storage medium, and may include, for example, a flash Memory, a hard disk, a multimedia card, a card-type Memory, a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a Programmable Read Only Memory (PROM), a Read Only Memory (ROM), a charge Erasable Programmable Read Only Memory (EEPROM), a magnetic Memory, a magnetic disk, an optical disk, and so on. The memory 702 is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 702 in the embodiments of the present application may also be circuitry or any other device capable of performing a storage function for storing program instructions and/or data.

By programming the processor 701, the code corresponding to the resource allocation method described in the foregoing embodiment may be solidified into a chip, so that the chip can execute the steps of the resource allocation method when running, and how to program the processor 701 is a technique known by those skilled in the art, and will not be described herein again.

Based on the same inventive concept, the present application further provides a storage medium storing computer instructions, which when executed on a computer, cause the computer to perform the steps of the resource allocation method as described above.

In some possible embodiments, the various aspects of the resource allocation method provided in the present application may also be implemented in the form of a program product, which includes program code for causing a smart device to perform the steps in the resource allocation method according to various exemplary embodiments of the present application described above in this specification, when the program product is run on a master device.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for resource allocation, comprising:

2. The method of claim 1, wherein the determining the corresponding spectral efficiency of each Downlink Control Information (DCI) format at least one Control Channel Element (CCE) aggregation level comprises:

3. The method of claim 1, wherein the at least one CCE aggregation level is a CCE aggregation level where the number of searches in CCE aggregation levels supported by the NR system is configured to be non-zero.

4. The method of claim 1, wherein each DCI format is DCI format0_0, or DCI format0_ 1, or DCI format 1_0, or DCI format 1_ 1.

5. The method of claim 1, wherein the determining the CCE aggregation level of the PDCCH from the mapping table according to the first spectral efficiency of the downlink physical control channel, PDCCH, and the DCI format of the first DCI carried by the PDCCH comprises:

6. A communication device, comprising a memory, a transceiver, a processor:

the memory for storing a computer program;

7. The communications device of claim 6, wherein the processor, when configured to determine the corresponding spectral efficiency of each downlink control information DCI format at least one control channel element, CCE, aggregation level, is specifically configured to:

8. The communication device of claim 6, wherein the at least one CCE aggregation level is a CCE aggregation level in which a number of searches in the CCE aggregation levels supported by the NR system is configured to be non-zero.

9. The communication device of claim 6, wherein each DCI format is DCI format0_0, or DCI format0_ 1, or DCI format 1_0, or DCI format 1_ 1.

10. The communications device of claim 6, wherein the processor is configured to determine, from the mapping table, a CCE aggregation level of a downlink physical control channel (PDCCH) according to a first spectral efficiency of the PDCCH and a DCI format of a first DCI carried by the PDCCH, and specifically is configured to:

11. A resource allocation apparatus, comprising:

12. A computer-readable storage medium having stored thereon computer instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-5.