CN105530705B - The distribution method and device of down control channel resources - Google Patents

Abstract

The embodiment of the present invention provides the distribution method and device of a kind of down control channel resources, the distribution method of the down control channel resources, include: that carrier wave is polymerize the PDCCH resource in cluster to be allocated, obtains the first uplink PDCCH resource of each up-link carrier and the downlink PDCCH resource of descending carrier；According to the priority orders of the user equipment of acquisition, uplink scheduling is carried out in the first uplink PDCCH resource of the up-link carrier or carries out descending scheduling in the downlink PDCCH resource of the descending carrier, until completing uplink scheduling or descending scheduling；It wherein, include a descending carrier and at least two up-link carriers in the carrier wave polymerization cluster.It realizes and a large amount of uplink services is scheduled when the carrier wave of a descending carrier and multiple up-link carriers polymerize, can satisfy the application scenarios of a large amount of uplink service demands.

Description

Method and device for allocating downlink control channel resources

Technical Field

The present invention relates to signal processing technologies, and in particular, to a method and an apparatus for allocating downlink control channel resources.

Background

In the current Long Term Evolution (LTE) system, a single carrier supports a system bandwidth of 20M at maximum, and if a larger bandwidth needs to be supported, a carrier aggregation technique needs to be performed.

In the existing third Generation Partnership Project (3 GPP) protocol, aggregation of 5 maximum carriers can be achieved, where the number of downlink carriers is required to be greater than or equal to the number of uplink carriers, and when a carrier aggregation technology is performed, each carrier aggregation cluster includes one uplink carrier and two or more downlink carriers, so as to aggregate and provide a larger downlink bandwidth, thereby effectively solving the problem that most downlink service requirements are greater than uplink service requirements, for example, downloading resources, acquiring video and audio services through user equipment.

In network applications in some industries, the requirement of uplink service is greater than that of downlink service, for example, video monitoring service, however, the existing carrier aggregation cannot provide a larger bandwidth for the uplink service, and cannot schedule a large amount of uplink service, resulting in an application scenario that cannot meet the requirement of a large amount of uplink service.

Disclosure of Invention

The method and the device for allocating downlink control channel resources provided by the embodiment of the invention solve the problem that carrier aggregation in the prior art cannot provide a larger bandwidth for the uplink service, and cannot schedule a large amount of uplink services, so that the application scenario that a large amount of uplink service requirements cannot be met is solved.

A first aspect of the present invention provides a method for allocating downlink control channel resources, including:

allocating Physical Downlink Control Channel (PDCCH) resources in a carrier aggregation cluster to obtain a first uplink PDCCH resource of each uplink carrier and a downlink PDCCH resource of each downlink carrier;

according to the acquired priority of the user equipment, performing uplink scheduling on a first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on a downlink PDCCH resource of the downlink carrier until the uplink scheduling or the downlink scheduling is completed;

wherein the carrier aggregation cluster includes one downlink carrier and at least two uplink carriers.

A second aspect of the present invention provides an apparatus for allocating downlink control channel resources, including:

the allocation module is used for allocating Physical Downlink Control Channel (PDCCH) resources in the carrier aggregation cluster to obtain a first uplink PDCCH resource of each uplink carrier and a downlink PDCCH resource of each downlink carrier;

a scheduling module, configured to perform uplink scheduling on a first uplink PDCCH resource of the uplink carrier or perform downlink scheduling on a downlink PDCCH resource of the downlink carrier according to the obtained priority of the user equipment until uplink scheduling or downlink scheduling is completed;

wherein the carrier aggregation cluster includes one downlink carrier and at least two uplink carriers.

According to the method and the device for allocating downlink control channel resources, provided by the embodiment of the invention, the PDCCH resources in one carrier aggregation cluster are allocated to obtain the first uplink PDCCH resource for uplink scheduling of each uplink carrier and the downlink PDCCH resource for downlink scheduling of the downlink carrier, and then the user equipment with scheduling is sequentially scheduled according to the priority from high to low, so that the resource scheduling after carrier aggregation is carried out when the uplink carrier is larger than the downlink carrier, and an application scene of a large number of uplink service requirements can be met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a carrier aggregation cluster with a larger number of downlink carriers than that of downlink carriers according to the present invention;

fig. 2 is a flowchart of a first method for allocating downlink control channel resources according to the present invention;

fig. 3 is a flowchart of a second method for allocating downlink control channel resources according to the present invention;

fig. 4 is a flowchart of a third embodiment of a method for allocating downlink control channel resources according to the present invention;

fig. 5 is a flowchart of a fourth method for allocating downlink control channel resources according to the present invention;

fig. 6 is a flowchart of a fifth embodiment of a method for allocating downlink control channel resources according to the present invention;

fig. 7 is a schematic structural diagram of an apparatus for allocating downlink control channel resources according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.

Fig. 1 is a schematic diagram of a carrier aggregation cluster in which the number of downlink carriers is greater than that of downlink carriers according to the present invention, and as shown in fig. 1, a carrier aggregation cluster includes unique downlink carriers D and K (K is a positive integer greater than or equal to 2) uplink carriers U, where the downlink carriers are downlink primary carriers; one of the K uplink carriers is an uplink main carrier, and the other carriers are auxiliary carriers.

For a plurality of aggregated uplink carriers, the following scenarios are specifically included:

(1) the aggregated carriers are continuous carriers in the same frequency BAND (BAND);

(2) the aggregated carriers are discontinuous carriers in the same frequency BAND (BAND);

(3) the aggregated uplink carriers are carriers in different frequency BANDs (BAND);

(4) and a mixture of the above scenes.

When scheduling is performed on an existing downlink carrier or an existing uplink carrier, it is necessary to calculate the priority of each User Equipment (UE) on the carrier according to an existing method, and then schedule each UE according to the priority order.

When Downlink scheduling is performed on a Downlink carrier, when a UE is scheduled, Physical Downlink Shared Channel (PDSCH) resources need to be allocated to the UE on the Downlink carrier according to the data volume of the UE. And when the PDSCH resources are successfully allocated, allocating PDCCH resources to the UE on the carrier, wherein the resources are used for bearing the PDCCH sent to the UE. The PDCCH is used to transmit scheduling information to the UE. The scheduling information includes: configuration information of PDSCH allocated to the UE and code modulation information required by the UE to receive a transport block transmitted by the base station. The UE is successfully scheduled when both PDSCH resources and PDCCH resources are successfully allocated. And for the successfully scheduled UE, deducting the PDSCH resource and the PDCCH resource allocated to the UE on the carrier. When other UEs are scheduled, the PDSCH resources and PDCCH resources that have been allocated to the scheduled UEs cannot be used. And ending the downlink scheduling on the carrier when no PDSCH resource or no PDCCH resource is left on the carrier or all the UE is scheduled.

For the scheduled UE, the order of the PDSCH resource and PDCCH resource allocation is not fixed. The PDCCH resources are allocated to the UE first, and the PDSCH resources may be reallocated.

For each successfully scheduled UE, the base station first sends scheduling information to the UE through the PDCCH, and then sends a transport block to the UE through PDSCH resources allocated to the UE. And the UE receives the PDCCH, determines the PDSCH resources allocated to the UE according to the scheduling information on the PDCCH, and receives the transmission blocks sent by the base station.

When performing Uplink scheduling on an Uplink carrier, when scheduling a UE, a PUSCH (Physical Uplink Shared Channel, abbreviated as PUSCH) resource needs to be allocated to the UE on the Uplink carrier according to a data amount reported by the UE. And when the PUSCH resource is successfully allocated, allocating PDCCH resources to the UE on a downlink carrier matched with the uplink carrier, wherein the resources are used for bearing the PDCCH sent to the UE. The PDCCH is used to transmit scheduling information to the UE. The scheduling information includes: configuration information of a PUSCH allocated to the UE and coded modulation information required by the UE to transmit a transport block. The UE is successfully scheduled when both PUSCH resources and PDCCH resources are successfully allocated. And for the successfully scheduled UE, deducting the PUSCH resource and the PDCCH resource allocated to the UE from the corresponding carrier. When other UEs are scheduled, the PUSCH resource and PDCCH resource which are already allocated to the scheduled UE cannot be used. And when no residual PUSCH resource exists on the uplink carrier or no residual PDCCH resource exists on the paired downlink carrier or all the UE is scheduled, ending the uplink scheduling on the carrier.

For the scheduled UE, the order of the PUSCH resource and PDCCH resource allocation is not fixed. The PDCCH resource is allocated to the UE first, and the PUSCH resource may be reallocated.

For each successfully scheduled UE, the base station first transmits scheduling information to the UE through the PDCCH, and then receives a transport block transmitted by the UE through a PUSCH resource allocated to the UE.

The technical solutions of all embodiments of the present invention are implemented based on the above-mentioned scenario, and mainly relate to a method for allocating uplink and downlink control channel resources of a unique downlink carrier in the above-mentioned scenario, and a corresponding method for scheduling downlink carriers and each uplink carrier.

Fig. 2 is a flowchart of a first embodiment of a method for allocating downlink control channel resources according to the present invention, and as shown in fig. 2, the method for allocating downlink control channel resources specifically includes the following steps:

s101: allocating Physical Downlink Control Channel (PDCCH) resources in a carrier aggregation cluster, and acquiring a first uplink PDCCH resource of each uplink carrier and a Downlink PDCCH resource of a Downlink carrier.

In this embodiment, each carrier aggregation cluster includes one downlink carrier and two or more uplink carriers. Scheduling of each carrier requires transmitting scheduling information to the UE using PDCCH resources on a unique downlink carrier. All carriers share PDCCH resources on a unique downlink carrier. Therefore, the PDCCH resource on the unique downlink carrier needs to be allocated among the carriers, so that each uplink carrier or downlink carrier has a suitable PDCCH resource to perform uplink or downlink scheduling on the user equipment.

S102: and according to the acquired priority of the user equipment, performing uplink scheduling on a first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on a downlink PDCCH resource of the downlink carrier until the uplink scheduling or the downlink scheduling is finished.

In this embodiment, the carrier aggregation cluster includes one downlink carrier and at least two uplink carriers, and the PDCCH resource includes at least two first uplink PDCCH resources and one downlink PDCCH resource.

After the PDCCH resource allocation is realized, uplink scheduling needs to be performed on the user equipment on each uplink carrier, and downlink scheduling is performed on all the user equipment in the cell range on the only downlink carrier. Generally, the user equipments are scheduled one by one according to the priority of the user equipments from high to low until there is no remaining shared channel resource or no remaining PDCCH resource or all the user equipments are scheduled.

In the method for allocating downlink control channel resources provided in this embodiment, a first uplink PDCCH resource for uplink scheduling on each uplink carrier and a downlink PDCCH resource for downlink scheduling on a downlink carrier are obtained by allocating PDCCH resources in a carrier aggregation cluster, and then each user equipment is sequentially scheduled according to a sequence of priorities from high to low on the corresponding carrier, so that uplink scheduling or downlink scheduling of each uplink carrier after carrier aggregation is performed when an uplink carrier is larger than a downlink carrier, and an application scenario requiring a large amount of uplink services can be satisfied.

Fig. 3 is a flowchart of a second embodiment of a method for allocating downlink control channel resources in the present invention, and as shown in fig. 3, in the method for allocating downlink control channel resources provided in this embodiment, a PDCCH resource is allocated to at least two uplink carriers and a unique downlink carrier according to a certain proportion, generally, the allocation proportion of each uplink carrier can be set according to a bandwidth size, and downlink scheduling is performed after resource allocation is completed, where the specific steps are as follows:

s201: and dividing the PDCCH resources into uplink PDCCH resources and downlink PDCCH resources according to a preset fixed proportion.

In this embodiment, the PDCCH resources are allocated to the downlink carrier and all uplink carriers according to a fixed ratio of the PDCCH resources of the downlink carrier and the PDCCH resources of the uplink carrier configured in advance, that is, the PDCCH resources are allocated to two downlink carriers and all uplink carriers: downlink PDCCH resources and uplink PDCCH resources.

S202: and acquiring the uplink bandwidth proportion corresponding to each uplink carrier according to the preset uplink bandwidth of each uplink carrier.

S203: and allocating the uplink PDCCH resources according to an uplink bandwidth proportion corresponding to each uplink carrier to obtain the first uplink PDCCH resource of each uplink carrier.

In this embodiment, for a plurality of uplink carriers, each uplink carrier shares PDCCH resources, that is, uplink PDCCH resources, allocated to all uplink carriers according to a ratio (a ratio may be set according to an uplink bandwidth size).

That is, each uplink carrier is allocated a first uplink PDCCH resource, and the number of the first uplink PDCCH resources is the same as the number of the uplink carriers and corresponds to each other.

S204: and acquiring the priority of each user equipment on the downlink carrier.

In this embodiment, the priorities of all the ues on the downlink carrier may be calculated and obtained according to the prior art, and the priorities are sorted from high to low.

S205: and according to the sequence of the priority of the user equipment from high to low, sequentially scheduling each user equipment on the downlink carrier until all shared channel resources on the downlink carrier are used, all downlink PDCCH resources are used or all user equipment are scheduled.

In this embodiment, in implementing downlink scheduling, a downlink carrier uses only downlink PDCCH resources allocated to itself. If downlink scheduling is performed first, the uplink scheduled carriers may share all the remaining PDCCH CCE resources in proportion. And vice versa.

Namely, for each uplink carrier or downlink carrier, according to the obtained scheduling priority order of the user equipment on the carrier, performing uplink scheduling by using the PUSCH resource on the uplink carrier and the first uplink PDCCH resource of the uplink carrier or performing downlink scheduling by using the PDSCH resource on the downlink carrier and the downlink PDCCH resource of the downlink carrier until no remaining shared channel resource or PDCCH resource allocated to the carrier remains or scheduling of all user equipment on the carrier is completed.

The following describes a detailed implementation of the present embodiment:

in a subframe, there are C uplink carriers with user equipment, C<K. The downlink PDCCH resource allocated to the downlink carrier includes the number of PDCCH Control Channel Elements (CCE)And the number of PDCCH CCEs included in the uplink PDCCH resources allocated to all uplink carriersCalculated according to the following formula respectively:

when downlink scheduling of downlink carriers is performed in a carrier aggregation cluster (cell) first and then uplink scheduling of each uplink carrier is performed,

or

In the above formula, N_CCEIndicating the total number of CCEs occupied by PDCCH resources to be allocated in the current subframe;the minimum number of CCEs allocated to the downlink PDCCH resource of the downlink carrier; x is belonged to (0, 1)]The CCE ratio indicating the downlink PDCCH resource allocated to the downlink carrier may be a preset value;indicates the number of CCEs of the downlink PDCCH resource actually used in downlink scheduling in the previous downlink scheduling.

When the uplink scheduling of each uplink carrier is firstly carried out in a carrier aggregation cluster (cell) and then the downlink scheduling of the downlink carrier is carried out,

or

In the above formula, N_CCEIndicating the total number of CCEs occupied by PDCCH resources to be allocated in the current subframe;the minimum number of CCEs allocated to downlink PDCCH resources of a downlink carrier; x is belonged to (0, 1)]The CCE ratio indicating the downlink PDCCH resource allocated to the downlink carrier may be a preset value;indicates the number of CCEs of the uplink PDCCH resource actually used in uplink scheduling.

Number of PDCCH resources allocated to uplink carrier of c-th user equipment

Indicating the number of CCEs occupied by the uplink PDCCH resources allocated to all uplink carriers, nul (c) indicating the bandwidth of the uplink carrier of the c-th user equipment.

Can be combined withAnd allocating the CCEs to any one of the C uplink carriers, and updating the number of the CCEs of the first uplink PDCCH resource occupied by the uplink carrier.

According to the result of the resource allocation, the downlink scheduling method of the user equipment on the downlink carrier wave is as follows:

first, the number of CCEs allocated to a downlink PDCCH resource of a downlink carrier is calculated

Secondly, aiming at the downlink carrier, the priority of the user equipment on the downlink carrier is calculated and sorted according to the priority.

And finally, starting to schedule the user equipment one by one from the user equipment with the highest priority until no residual downlink PDSCH resource, no residual downlink PDCCH resource or all the user equipment are scheduled, and ending. The scheduling procedure for each user equipment is as follows:

in the process of allocating the PDSCH resources and the PDCCH resources to the user equipment, if one of the PDSCH resources or the PDCCH resources is not successfully allocated, the next user equipment in the queue is scheduled.

If the two resources are successfully allocated, corresponding resources allocated to the user equipment are removed from PDSCH resources and downlink PDCCH resources, and the number of CCEs of the downlink PDCCH resources is countedAnd reducing the number of CCEs occupied by the downlink PDCCH resource allocated to the user equipment.

And when the residual PDSCH resources and the residual downlink PDCCH resources exist, starting to schedule the next user equipment in the queue. And when no downlink PDSCH resource or no PDCCH CCE resource exists or all the user equipment in the queue is scheduled, finishing the scheduling.

In the method for allocating downlink control channel resources provided in this embodiment, a PDCCH resource in a carrier aggregation cluster is allocated to an uplink PDCCH resource and a downlink PDCCH resource, then a priority is obtained for user equipment on the downlink carrier, and downlink scheduling is performed on each user equipment in sequence according to the sequence of priorities of the user equipment from high to low, so that when an uplink carrier is larger than a downlink carrier, PDSCH and PDCCH resources on the downlink carrier after carrier aggregation are scheduled, and an application scenario that a large number of uplink service requirements can be met.

Fig. 4 is a flowchart of a third embodiment of a method for allocating downlink control channel resources in the present invention, as shown in fig. 4, in the method for allocating downlink control channel resources provided in this embodiment, a PDCCH resource is allocated to at least two uplink carriers and a unique downlink carrier according to a certain proportion, generally, the allocation proportion of each uplink carrier can be set according to a bandwidth size, and uplink scheduling is performed after resource allocation is completed, which includes the following specific steps:

s301: and dividing the PDCCH resources into uplink PDCCH resources and downlink PDCCH resources according to a preset fixed proportion.

In this embodiment, the PDCCH resources are allocated to the downlink carrier and all uplink carriers according to a fixed ratio of the PDCCH resources of the downlink carrier and the PDCCH resources of the uplink carrier configured in advance, that is, the PDCCH resources are allocated to two downlink carriers and all uplink carriers: downlink PDCCH resources and uplink PDCCH resources.

S302: and acquiring the uplink bandwidth proportion corresponding to each uplink carrier according to the preset uplink bandwidth of each uplink carrier.

S303: and allocating the uplink PDCCH resources according to an uplink bandwidth proportion corresponding to each uplink carrier to obtain the first uplink PDCCH resource of each uplink carrier.

In this embodiment, for multiple uplink carriers, uplink carriers with UEs share PDCCH resources, that is, uplink PDCCH resources, allocated to all uplink carriers according to a ratio (a ratio may be set according to an uplink bandwidth size).

That is, each uplink carrier is allocated a first uplink PDCCH resource, and the number of the first uplink PDCCH resources is the same as the number of the uplink carriers and corresponds to each other.

S304: and acquiring the priority of each user equipment on each uplink carrier.

In this embodiment, for each uplink carrier, the priority of the ue on the uplink carrier is calculated, and the ues are sorted according to the priority from high to low.

S305: and according to the sequence of the priority of the user equipment on the uplink carrier from high to low, sequentially scheduling each user equipment on the uplink carrier until all shared channel resources on the uplink carrier are used, all first uplink PDCCH resources corresponding to the uplink carrier are used or all the user equipment on the uplink carrier are scheduled.

In this embodiment, for each user equipment on the uplink carrier, scheduling is sequentially performed on the PUSCH resource of the uplink carrier and the first uplink PDCCH resource corresponding to the uplink carrier until all PUSCH resources of the uplink carrier are used, or all first uplink PDCCH resources corresponding to the uplink carrier are used, or all user equipments on the uplink carrier have been scheduled.

On the basis of the embodiment shown in fig. 3, the following is a detailed description of the solution of the present embodiment based on the same background:

in a subframe, there are C uplink carriers with users, C<K. Number of CCEs allocated to downlink PDCCH resource of downlink carrierAnd the number of CCEs allocated to the uplink PDCCH resources of all uplink carriersCalculated according to the following formula respectively:

when the uplink scheduling of each uplink carrier is firstly carried out in a carrier aggregation cluster (cell) and then the downlink scheduling of the downlink carrier is carried out,

or

In the above formula, N_CCEIndicating the total number of CCEs occupied by PDCCH resources to be allocated in the current subframe;the minimum number of CCEs allocated to downlink PDCCH resources of a downlink carrier; x is belonged to (0, 1)]The CCE ratio indicating the downlink PDCCH resource allocated to the downlink carrier may be a preset value;indicates the number of CCEs of the uplink PDCCH resource actually used in uplink scheduling.

When downlink scheduling of downlink carriers is performed in a carrier aggregation cluster (cell) first and then uplink scheduling of each uplink carrier is performed,

or

In the above formula, N_CCEIndicating the total number of CCEs occupied by PDCCH resources to be allocated in the current subframe;the minimum number of CCEs allocated to the downlink PDCCH resource of the downlink carrier; x is belonged to (0, 1)]The CCE ratio indicating the downlink PDCCH resource allocated to the downlink carrier may be a preset value;indicates the number of CCEs of the downlink PDCCH resource actually used in downlink scheduling in the previous downlink scheduling.

Number of PDCCH resources allocated to uplink carrier of c-th user equipment

Indicating the number of CCEs occupied by the uplink PDCCH resource allocated to all uplink carriers, N^UL(c) And the bandwidth of the uplink carrier of the c-th user equipment is shown.

Can be combined withAnd allocating any one of the C uplink carriers, and updating the number of CCEs of the first uplink PDCCH resource occupied by the uplink carrier.

According to the result of the resource allocation, the uplink scheduling manner of the user equipment on the at least two uplink carriers is as follows:

first, the CCE number of the first uplink PDCCH resource which can be used by each uplink carrier is calculated

Secondly, for the uplink carrier of each user equipment, calculating the priority of the user equipment on the uplink carrier and sequencing the priority.

And finally, carrying out uplink scheduling one by one from the first uplink carrier with the user equipment. When each uplink carrier is scheduled, the user equipment with the highest priority on the uplink carrier is scheduled one by one, and the scheduling action of the carrier is not finished until no residual PUSCH resource or no residual first uplink PDCCH resource or all the user equipment on the uplink carrier is scheduled.

The scheduling procedure for each user equipment is as follows:

and allocating a PUSCH resource, a first uplink PDCCH resource and a Physical Hybrid automatic repeat request Indicator Channel (PHICH) resource to the user equipment. And if any one of the resources is not successfully allocated, starting to schedule the next user equipment in the queue. If the allocation of various resources is successful, removing the PUSCH resource allocated to the user equipment from the PUSCH resource, removing the PDCCH resource allocated to the terminal from the first uplink PDCCH resource, and counting the CCE number of the first uplink PDCCH resourceAnd subtracting the number of CCEs of the first uplink PDCCH resource allocated to the user equipment, and removing the resource allocated to the user equipment from the PHICH resource. And when the residual PUSCH resources, the residual CCE resources of the first uplink PDCCH and the PHICH resources exist, starting to schedule the next user equipment on the uplink carrier. When there is no PUSCH resource or no first uplink PDCCH resource or no PHICH resource or all user equipments have been scheduledAnd ending the uplink scheduling of the carrier.

When all the uplink carriers are scheduled, if the CCE resources of the total uplink PDCCH resources are finishedIf there are resources that are not used in the scheduling process (for example, some uplink carrier users rarely use all the first uplink PDCCH resources on the carrier), the uplink carriers that have user equipment that is not scheduled are scheduled one by one according to the carrier sequence. And when each carrier is scheduled, scheduling the user equipment which is not scheduled from large to small according to the priority.

In the method for allocating downlink control channel resources provided by this embodiment, a PDCCH resource in a carrier aggregation cluster is allocated to an uplink PDCCH resource and a downlink PDCCH resource, and then the uplink PDCCH resource is allocated to the same number of parts as the number of uplink carriers according to the bandwidth proportion of each uplink carrier, that is, a plurality of first uplink PDCCH resources, the priority of a user equipment on each uplink carrier is sequentially calculated and obtained, and uplink scheduling is sequentially performed on each user equipment according to the sequence of the priorities of the user equipment from high to low, so that when the uplink carrier is greater than the downlink carrier, PDCCH resource scheduling on each uplink carrier after carrier aggregation is performed, and an application scenario that a large number of uplink service requirements can be met.

On the basis of the embodiments shown in fig. 3 and fig. 4, the manner of allocating PDCCH resources in the carrier aggregation cluster and acquiring the first uplink PDCCH resource of each uplink carrier and the downlink PDCCH resource of each downlink carrier further includes:

acquiring whether the uplink PDCCH resource allocation failure to the user equipment and/or the downlink PDCCH resource allocation failure to the user equipment exists after the last scheduling process is completed, and acquiring whether the uplink PDCCH resource or the downlink PDCCH resource is remained;

if only the uplink PDCCH resource allocation failure and the downlink PDCCH resource residue exist for the user equipment after the last scheduling is finished, or only the downlink PDCCH resource allocation failure and the uplink PDCCH resource residue exist for the user equipment, dividing the PDCCH resources into the uplink PDCCH resources and the downlink PDCCH resources according to a first allocation proportion, acquiring an uplink bandwidth proportion corresponding to each uplink carrier according to a preset uplink bandwidth of each uplink carrier, and then allocating the uplink PDCCH resources according to the uplink bandwidth proportion corresponding to each uplink carrier to acquire the first uplink PDCCH resource of each uplink carrier;

otherwise, dividing the PDCCH resources into uplink PDCCH resources and downlink PDCCH resources according to a preset fixed proportion, acquiring an uplink bandwidth proportion corresponding to each uplink carrier according to a preset uplink bandwidth of each uplink carrier, and allocating the uplink PDCCH resources according to the uplink bandwidth proportion corresponding to each uplink carrier to acquire the first uplink PDCCH resource of each uplink carrier;

and the first allocation proportion is the allocation proportion obtained after the residual resources in the uplink PDCCH resources or the downlink PDCCH resources are reallocated after the last scheduling is finished.

In this embodiment, the obtaining of the scheduling condition after the last scheduling specifically includes: whether the PDCCH resource allocation failure to the UE exists in the uplink scheduling of each uplink carrier, whether the PDCCH resource allocation failure to the UE exists in the downlink scheduling, and whether the uplink PDCCH resource and the downlink PDCCH resource are remained. If no or failure of UE to allocate PDCCH resources exists in the uplink scheduling and the downlink scheduling in the last scheduling, dividing the PDCCH resources into uplink PDCCH resources and downlink PDCCH resources according to a preset fixed proportion in the scheduling, acquiring an uplink bandwidth proportion corresponding to each uplink carrier according to a preset uplink bandwidth of each uplink carrier, and allocating the uplink PDCCH resources according to the uplink bandwidth proportion corresponding to each uplink carrier to acquire the first uplink PDCCH resource of each uplink carrier.

If the last scheduling is finished, the failure of PDCCH resource allocation to the UE exists in the uplink scheduling, the failure of PDCCH resource allocation to the UE does not exist in the downlink scheduling and the remaining PDCCH resources exist in the downlink scheduling, or the failure of PDCCH resource allocation to the UE exists in the downlink scheduling, the failure of PDCCH resource allocation to the UE does not exist in the uplink scheduling and the remaining PDCCH resources exist in the uplink scheduling, the PDCCH resources are divided into uplink PDCCH resources and the downlink PDCCH resources according to a first allocation proportion, the uplink bandwidth proportion corresponding to each uplink carrier is obtained according to the preset uplink bandwidth of each uplink carrier, then the uplink PDCCH resources are allocated according to the uplink bandwidth proportion corresponding to each uplink carrier, and the first uplink PDCCH resource of each uplink carrier is obtained;

and the first allocation proportion is the allocation proportion obtained after the downlink PDCCH resource or the uplink PDCCH resource is reallocated according to the residual situation of the downlink PDCCH resource or the uplink PDCCH resource after the last scheduling is finished.

Specifically, the first distribution ratio is obtained as follows:

when the PDCCH resource allocation failure to the UE exists in the uplink scheduling, the PDCCH resource allocation failure to the UE does not exist in the downlink scheduling, and the residual PDCCH resources exist, allocating part of resources in the residual PDCCH resources to the uplink scheduling, and recalculating the PDCCH proportion occupied by the downlink scheduling to obtain the first allocation proportion;

allocating PDCCH resources to the UE in the downlink scheduling fails, and the PDCCH resources which are allocated to the UE and are remained do not exist in the uplink scheduling, allocating part of resources in the remained uplink PDCCH resources to the downlink scheduling, and recalculating the PDCCH proportion occupied by the downlink scheduling to obtain the first allocation proportion;

before entering PDCCH resource allocation in the scheduling, whether the PDCCH resources in uplink scheduling and downlink scheduling in the scheduling of the last time have allocation failure and the use conditions of the uplink PDCCH resources and the downlink PDCCH resources are obtained, namely whether the PDCCH resources have allocation failure and whether PDCCH resources are left in the uplink scheduling and the downlink scheduling of the last time are judged.

If the PDCCH resource allocation failure exists in both uplink scheduling and downlink scheduling or the PDCCH resource allocation failure does not exist in the last scheduling, continuously performing PDCCH resource allocation according to a preset fixed proportion;

if the fact that in the last scheduling, PDCCH resource allocation failure exists in uplink scheduling, PDCCH resource allocation failure does not exist in downlink scheduling and PDCCH resource remains is judged, the remaining PDCCH resource in downlink scheduling is partially allocated to the uplink scheduling in the current scheduling for use, the set fixed proportion is adjusted to be a first allocation proportion according to the PDCCH resource remaining condition in the last downlink scheduling, and PDCCH resources are allocated according to a new proportion;

if the fact that in the last scheduling, PDCCH resource allocation failure exists in downlink scheduling, PDCCH resource allocation failure does not exist in uplink scheduling and PDCCH resource remains is judged, the remaining PDCCH resource in the uplink scheduling is partially allocated to be used in the downlink scheduling in the current scheduling, the set fixed proportion is adjusted to be a first allocation proportion according to the PDCCH resource remaining condition in the last uplink scheduling, and PDCCH resources are allocated according to a new proportion;

after the allocation of the uplink PDCCH resource and the downlink PDCCH resource is completed in the above manner, the uplink bandwidth proportion corresponding to each uplink carrier is obtained according to the preset uplink bandwidth of each uplink carrier, and then the uplink PDCCH resource is allocated according to the uplink bandwidth proportion corresponding to each uplink carrier to obtain the first uplink PDCCH resource of each uplink carrier.

After the first uplink PDCCH resource of each uplink carrier to be used in the current scheduling and the downlink PDCCH resource corresponding to the downlink carrier are obtained, the specific scheduling manner refers to the schemes shown in fig. 3 and 4, and is not described herein again.

To sum up, the first allocation ratio is obtained by dynamically adjusting the PDCCH resource allocation failure condition and the resource remaining condition scheduled last time, the PDCCH resource in one carrier aggregation cluster is allocated into the uplink PDCCH resource and the downlink PDCCH resource according to the first allocation ratio, then the uplink PDCCH resource is allocated into the number of parts same as the number of uplink carriers according to the bandwidth ratio of each uplink carrier, that is, a plurality of first uplink PDCCH resources, the priority of the user equipment on each uplink carrier is sequentially calculated and obtained, and uplink scheduling is sequentially performed on each user equipment according to the sequence of the priorities of the user equipment from high to low, so that when the uplink carrier is larger than the downlink carrier, resource scheduling on each uplink carrier after carrier aggregation is performed, an application scenario that a large number of uplink service demands can be met, and the scheduling efficiency is high.

In particular, in the implementation process of the methods shown in fig. 3 and 4, the manner of puncturing and expanding the number of PDCCH symbols is as follows:

when one subframe scheduling is finished, if all the following conditions are met, reducing the number of PDCCH symbols by one:

the method comprises the following steps that (I), the condition that the user equipment on any carrier fails to allocate PDCCH resources does not occur in uplink scheduling and downlink scheduling;

(II) CCE number of PDCCH resources that are not used at the end of uplink scheduling and downlink schedulingGreater than TH-N_CCE-M_CCE+Δ_minus，M_CCEIndicates that the PDCCH resource can provide the number of CCEs, Δ, after the number of symbols of the PDCCH resource is reduced by one_minus>0 represents a margin, and TH represents a threshold value of resource search;

(iii) the current PDCCH symbol number is not the minimum.

When one subframe scheduling is finished, if one of the following conditions is met, adding one to the number of symbols of the PDCCH resource:

(I), the condition that the user equipment fails to allocate PDCCH exists in the uplink or downlink carrier scheduling

(II) CCE number of PDCCH resources that are not used at the end of uplink scheduling and downlink schedulingLess than Δ_plus，Δ_plus>0 represents a margin.

(III) the number of symbols of the current PDCCH resource is not the maximum value

Fig. 5 is a flowchart of a fourth embodiment of the method for allocating downlink control channel resources according to the present invention, and as shown in fig. 5, in the method for allocating downlink control channel resources provided in this embodiment, a PDCCH resource is divided into sub-PDCCH resources of the same number as that of uplink carriers according to the number of uplink carriers, then each sub-PDCCH resource is divided into an uplink PDCCH resource and a downlink PDCCH resource according to a preset ratio of the uplink and downlink resources, and downlink scheduling is performed after resource allocation is completed, and the ratio of each PDCCH resource for dividing the uplink PDCCH resource and the downlink PDCCH resource can be set independently. The method comprises the following specific steps:

s401: and distributing the PDCCH resources according to the number of the uplink carriers, and acquiring at least two sub-PDCCH resources with the same number as the uplink carriers.

In this embodiment, one carrier aggregation cluster is regarded as K cells, where K denotes the number of uplink carriers, that is, each cell is composed of one uplink carrier and one downlink carrier, and all the K cells share the same downlink carrier.

Dividing the PDCCH resources to be allocated into K parts according to the preset proportion of the PDCCH resources which can be used by each cell, namely acquiring at least two sub-PDCCH resources with the same number as that of uplink carriers.

S402: distributing the sub-PDCCH resources corresponding to each uplink carrier according to a preset uplink and downlink resource proportion to obtain the first uplink PDCCH resource and the first downlink PDCCH resource; the downlink PDCCH resources comprise all first downlink PDCCH resources.

In this embodiment, the ratio of PDCCH resources that can be occupied by uplink carriers and downlink carriers in each cell is preset, and the sub-PDCCH resources of each cell are divided into a first uplink PDCCH resource and a first downlink PDCCH resource according to the ratio.

That is, in the scheme of this embodiment, the PDCCH resource is first divided into the same number of sub-PDCCH resources as the number of uplink carriers, and the sub-PDCCH resource is allocated again in the sub-PDCCH resource corresponding to each uplink carrier, so as to obtain a first uplink PDCCH resource for performing uplink scheduling and a first downlink PDCCH resource for performing downlink scheduling.

S403: and acquiring the priority of each user equipment on each uplink carrier in downlink scheduling.

In this embodiment, the priorities of the ue on each uplink carrier (i.e., in each cell) in the downlink scheduling are respectively calculated and obtained, and the ues are sorted according to the priority from high to low.

S404: and sequentially performing downlink scheduling on each user equipment on the uplink carrier according to the sequence of the priority of the user equipment from high to low until all the shared channel resources on the downlink carrier are used, all the first downlink PDCCH resources are used or all the user equipment are scheduled.

In this embodiment, for the ue on each uplink carrier (i.e. in each cell), the scheduling is performed in order from high priority to low priority: and allocating PDSCH resources to the user equipment on the downlink carrier, and allocating PDCCH resources to the user equipment on the first downlink PDCCH resource corresponding to the uplink carrier.

The detailed implementation of the present embodiment is explained based on the above steps:

each cell is set up such thatPDCCH resource ratio usedWhen the method is arranged in a subframe for scheduling, user equipment is arranged in the front C cell. The number of CCEs allocated to each cell is:

N_CCEindicates the total number of CCEs occupied by PDCCH resources to be allocated in the current subframe, N_CCE(c) Indicating the total number of CCEs occupied by the sub-PDCCH resource allocated to the current cell c.

And setting the proportion of the first downlink PDCCH resource used by the downlink carrier in the cell c as y (c).

The number of CCEs allocated to the first downlink PDCCH resource of the downlink carrier and the uplink carrier in the cellNumber of CCEs of first uplink PDCCH resourceThe calculation is as follows:

when downlink scheduling is performed first and then uplink scheduling is performed,

or

When the uplink scheduling is performed first and then the downlink scheduling is performed,

or

In the above formula, the first and second carbon atoms are,the CCE number of the first downlink PDCCH resource that indicates the actual use of the cell c in downlink scheduling;indicates the number of CCEs of the first uplink PDCCH resource actually used by cell c in uplink scheduling.

Based on the above PDCCH resource allocation, the downlink scheduling method has the specific mode:

scheduling is performed cell by cell, starting from the first cell. When each cell is scheduled, the priority of each user equipment in the cell is respectively calculated and sorted according to the priority. And starting to schedule the user equipment with the highest priority of each cell one by one until no PDSCH resource or no first downlink PDCCH resource exists on a downlink carrier or all the user equipment in a queue is scheduled, and ending the scheduling.

If there are remaining PDSCH resources or remaining PDCCH resources after all cells finish downlink scheduling, there are cells for which the ue is not scheduled yet that can share the remaining CCE resources. Downlink scheduling is performed again cell by cell starting from the cell with the smallest cell number among the cells. And scheduling the user equipment which is not scheduled in each cell according to the sequence of the priorities from large to small until the cell has no left CCE resources or all the user equipment in the cell is scheduled.

In the method for allocating downlink control channel resources provided in this embodiment, PDCCH resources in one carrier aggregation cluster are allocated to sub-PDCCH resources with the same number of parts as that of uplink carriers, and each sub-PDCCH resource is divided into: and sequentially calculating and acquiring the priority of the user equipment in each sub-PDCCH resource by the first uplink PDCCH resource and the first downlink PDCCH resource, and sequentially performing downlink scheduling on each user equipment on a downlink carrier and the first downlink PDCCH resource according to the sequence from high to low of the priority of the user equipment, so that the downlink scheduling of the downlink carrier after carrier aggregation is performed when the uplink carrier is larger than the downlink carrier, and an application scene of a large amount of uplink service requirements can be met.

Fig. 6 is a flowchart of a fifth embodiment of a method for allocating downlink control channel resources according to the present invention, and as shown in fig. 6, in the method for allocating downlink control channel resources provided in this embodiment, a PDCCH resource is divided into sub-PDCCH resources with the same number as that of uplink carriers according to the number of uplink carriers, then each sub-PDCCH resource is allocated with an uplink PDCCH resource and a downlink PDCCH resource according to a preset ratio of the uplink and downlink resources, and uplink scheduling is performed after resource allocation is completed, where the specific steps are as follows:

s501: and distributing the PDCCH resources according to the number of the uplink carriers, and acquiring at least two sub-PDCCH resources with the same number as the uplink carriers.

In this embodiment, one carrier aggregation cluster is regarded as K cells, where K denotes the number of uplink carriers in the carrier aggregation cluster, that is, each cell is composed of one uplink carrier and one downlink carrier, and all the K cells share the same downlink carrier.

Dividing the PDCCH resources to be allocated into K parts according to the preset proportion of the PDCCH resources which can be used by each cell, namely acquiring at least two sub-PDCCH resources with the same number as that of uplink carriers.

S502: distributing the sub-PDCCH resources corresponding to each uplink carrier according to a preset uplink and downlink resource proportion to obtain the first uplink PDCCH resource and the first downlink PDCCH resource; the downlink PDCCH resources comprise all first downlink PDCCH resources.

In this embodiment, the ratio of PDCCH resources that can be occupied by uplink carriers and downlink carriers in each cell is preset, and the sub-PDCCH resources of each cell are divided into a first uplink PDCCH resource and a first downlink PDCCH resource according to the ratio.

That is, in the scheme of this embodiment, the PDCCH resource is first divided into the same number of parts as the number of uplink carriers, and the sub-PDCCH resource corresponding to each uplink carrier is allocated again, so as to obtain the first uplink PDCCH resource for performing uplink scheduling and the first downlink PDCCH resource for performing downlink scheduling.

S503: and acquiring the priority of each user equipment in uplink scheduling on each uplink carrier.

In this embodiment, the priorities of the ue on each uplink carrier (i.e., in each cell) in uplink scheduling are calculated and obtained, and the ues are sorted according to the priority from high to low.

S504: and sequentially carrying out uplink scheduling on each user equipment on the uplink carrier according to the sequence of the priority of the user equipment from high to low until all the shared channel resources on the uplink carrier are used, all the first uplink PDCCH resources are used or all the user equipment are scheduled.

In this embodiment, for the user equipment of each uplink carrier (i.e. in each cell), scheduling is performed on the PUSCH resource corresponding to the uplink carrier and the corresponding first uplink PDCCH resource in sequence from high priority to low priority.

The scheme of this example is explained in detail below:

each cell can be setPDCCH resource proportion usedWhen the method is arranged in a subframe for scheduling, user equipment is arranged in the front C cell. The number of CCEs allocated to each cell is:

N_CCEindicates the total number of CCEs occupied by PDCCH resources to be allocated in the current subframe, N_CCE(c) Indicating the total number of CCEs occupied by the sub-PDCCH resource allocated to the current cell c.

And setting the proportion of the first downlink PDCCH resource used by the downlink carrier in the cell c as y (c). The number of CCEs of the first downlink PDCCH resource allocated to the downlink carrier and the uplink carrier in the cell isThe number of CCEs of the first uplink PDCCH resource isThe calculation method is as follows:

when the uplink scheduling is performed first and then the downlink scheduling is performed,

or

When downlink scheduling is performed first and then uplink scheduling is performed,

or

Wherein,indicates the number of CCEs of the first downlink PDCCH resource allocated to the downlink carrier in the sub-PDCCH resource (within the cell c),indicating the number of CCEs allocated to the first uplink PDCCH resource of the uplink carrier in the cell.

Based on the above PDCCH resource allocation, the uplink scheduling method comprises the following steps:

scheduling is performed cell by cell, starting from the first cell. When each cell is scheduled, the priority of each user equipment in the cell is respectively calculated and sorted according to the priority. And starting scheduling by user equipment from the user equipment with the highest priority of each cell until the cell has no PUSCH resource or no CCE resource of the first uplink PDCCH resource, PHICH resource or all the user equipment in the queue are scheduled, and finishing the scheduling.

If the rest uplink PDCCH resources exist after the uplink scheduling of all the cells is finished, the cells which are not scheduled by the user equipment and have the idle PUSCH resources and the idle PHICH resources can share the rest uplink PDCCH resources. The uplink scheduling is performed sequentially from the cell with the smallest cell number. And scheduling the user equipment which is not scheduled in each cell according to the sequence of the priorities from large to small until the cell has no residual PUSCH resource or PHICH resource or uplink PDCCH resource or all the user equipment are scheduled.

In the method for allocating downlink control channel resources provided in this embodiment, PDCCH resources in one carrier aggregation cluster are allocated to sub-PDCCH resources with the same number as that of uplink carriers, and each sub-PDCCH resource is divided into: the method comprises the steps of calculating and acquiring the priority of user equipment on each uplink carrier (in each cell) in sequence by using a first uplink PDCCH resource and a first downlink PDCCH resource, and performing uplink scheduling on each user equipment in sequence from high to low according to the priority of the user equipment, so that the uplink scheduling on each uplink carrier after carrier aggregation is performed when the uplink carrier is larger than the downlink carrier, and an application scene of a large amount of uplink service requirements can be met.

On the basis of the embodiments shown in fig. 5 and fig. 6, the implementation manner of allocating PDCCH resources in the carrier aggregation cluster and acquiring the first uplink PDCCH resource of each uplink carrier and the downlink PDCCH resource of each downlink carrier further includes:

distributing the PDCCH resources according to the number of the uplink carriers to obtain at least two sub-PDCCH resources with the same number as the uplink carriers;

after the last scheduling process is completed, whether PDCCH resource allocation failure for uplink scheduling and/or downlink PDCCH resource allocation failure for downlink scheduling corresponding to each sub-PDCCH resource exists in each sub-PDCCH resource or not is obtained, and whether PDCCH resources for uplink scheduling or downlink PDCCH resources for downlink scheduling in the sub-PDCCH resources are remained or not is obtained;

if only the PDCCH resource allocation failure of the uplink scheduling corresponding to the sub-PDCCH resource exists and the PDCCH resource used for the downlink scheduling exists residual after the last scheduling process is finished, or only the PDCCH resource allocation failure of the downlink scheduling corresponding to the sub-PDCCH resource exists and the PDCCH resource used for the uplink scheduling exists residual, the sub-PDCCH resource is allocated according to a first uplink and downlink resource proportion, and the first uplink PDCCH resource and the first downlink PDCCH resource used for the current scheduling are obtained;

otherwise, distributing the sub-PDCCH resources according to a preset uplink and downlink resource proportion to obtain the first uplink PDCCH resource and the first downlink PDCCH resource for the current scheduling;

and the first uplink and downlink resource proportion is the uplink and downlink resource proportion after the PDCCH resource used for uplink scheduling or the rest of the PDCCH resource used for downlink scheduling in the sub-PDCCH resources is reallocated after the last scheduling process is completed.

In this embodiment, specifically, the PDCCH resources are allocated according to the number of the uplink carriers, and at least two sub-PDCCH resources with the same number as the uplink carriers are obtained; acquiring whether PDCCH resource allocation failure exists in uplink scheduling and downlink scheduling corresponding to each sub-PDCCH resource and whether first uplink PDCCH resource for uplink scheduling and first downlink PDCCH resource for downlink scheduling have residue after the last scheduling process is finished;

if there is no PDCCH resource allocation failure in the uplink scheduling and the downlink scheduling corresponding to the sub-PDCCH resource or there is PDCCH resource allocation failure in the uplink scheduling and the downlink scheduling corresponding to the sub-PDCCH resource after the last scheduling process is finished, allocating the sub-PDCCH resource corresponding to each uplink carrier according to a preset uplink and downlink resource proportion, and acquiring the first uplink PDCCH resource and the first downlink PDCCH resource for the current scheduling;

if after the last scheduling process is completed, the PDCCH resource allocation failure exists in the uplink scheduling corresponding to the sub-PDCCH resource, the PDCCH resource allocation failure does not exist in the downlink scheduling, and the first downlink PDCCH resource remains, or the PDCCH resource allocation failure exists in the downlink scheduling corresponding to the sub-PDCCH resource, the PDCCH resource allocation failure does not exist in the uplink scheduling, and the first uplink PDCCH resource remains, the sub-PDCCH resource is allocated according to a first uplink and downlink resource proportion, and the first uplink PDCCH resource and the first downlink PDCCH resource used for the current scheduling are acquired;

the first uplink and downlink resource proportion is the uplink and downlink resource proportion after the first uplink PDCCH resource for uplink scheduling or the rest resource of the first downlink PDCCH resource for downlink scheduling in the sub-PDCCH resources is reallocated after the last scheduling process is completed; the first uplink and downlink resource proportion is the proportion occupied by PDCCH resources used by downlink scheduling obtained after part of the resources in the remaining first downlink PDCCH resources are divided for uplink scheduling or divided for downlink scheduling.

In this embodiment, first, all PDCCH resources are divided into the same number of parts as the number of uplink carriers according to the number of uplink carriers, and before further allocation in each sub-PDCCH resource, the remaining situations of the first uplink PDCCH resource and the first downlink PDCCH resource in each sub-PDCCH resource and the PDCCH resource allocation failure situation in scheduling are obtained after the last scheduling process is completed;

if the first uplink PDCCH resource and the first downlink PDCCH resource have no distribution failure or have distribution failure after the last scheduling is finished, continuing to distribute the sub-PDCCH resources according to the preset uplink and downlink resource proportion to obtain the first uplink PDCCH resource and the first downlink PDCCH resource used for the scheduling;

if the allocation of the first uplink PDCCH resource in uplink scheduling and the allocation of the first downlink PDCCH resource in downlink scheduling are obtained after the last scheduling is finished, only if the PDCCH resource allocation in one direction (uplink or downlink) fails and the PDCCH resource allocation in the other direction fails and there is a surplus, borrowing part of the resources in the PDCCH resources left in the direction in which the PDCCH resource allocation fails in the last scheduling to the other direction in the scheduling to be used as the PDCCH resources in the other direction in the scheduling, adjusting a preset uplink and downlink resource proportion according to the PDCCH resource allocation failure condition and the PDCCH resource residual condition in two directions (uplink or downlink) in the last sub-PDCCH resource to obtain a first uplink and downlink resource proportion, reallocating the sub-PDCCH resource according to the new first uplink and downlink resource proportion, and obtaining a first uplink PDCCH resource and a first downlink PDCCH resource for the scheduling;

each sub-PDCCH resource may be allocated in the above manner, and after the first uplink PDCCH resource of each uplink carrier to be used in the current scheduling and the first downlink PDCCH resource corresponding to the downlink carrier are obtained, the specific scheduling manner refers to the schemes shown in fig. 5 and fig. 6, and details are not described here.

In the method for allocating downlink control channel resources provided in this embodiment, a PDCCH resource in a carrier aggregation cluster is allocated to sub-PDCCH resources with the same number as that of uplink carriers, and according to a failure condition of PDCCH resource allocation after completion of last scheduling and a remaining condition of PDCCH resources, an uplink-downlink resource ratio is dynamically adjusted to obtain a first uplink-downlink resource ratio, and each sub-PDCCH resource is divided into: the first uplink PDCCH resource and the first downlink PDCCH resource used for the scheduling are used for sequentially calculating and obtaining the priority of user equipment on each uplink carrier (in each cell), and sequentially performing uplink scheduling or downlink scheduling on each user equipment according to the sequence of the priorities of the user equipment from high to low, so that the uplink scheduling or downlink scheduling on each uplink carrier after carrier aggregation is performed when the uplink carrier is larger than the downlink carrier, application scenes of a large amount of uplink service requirements can be met, and the scheduling efficiency of the user equipment is effectively improved.

In particular, in the implementation of the methods shown in fig. 5 and fig. 6, the manner of puncturing and expanding the number of PDCCH symbols is as follows:

when one subframe scheduling is finished, if all the following conditions are met, the number of symbols of the PDCCH resource is reduced by one.

The method comprises the following steps that (I), the condition that user equipment fails to allocate PDCCH resources on any carrier does not exist in uplink scheduling and downlink scheduling of each cell;

(II) when the uplink scheduling and the downlink scheduling are finished, the number of CCEs of the PDCCH resources which are not used is more than TH (N)_CCE-M_CCE+Δ_minus， M_CCEIndicates that the PDCCH resource can also provide the number of CCEs, Δ, after the number of symbols of the PDCCH resource is reduced by one_minus>0 represents more thanAmount of the compound (A).

(III) the current PDCCH symbol number is not the minimum value

When one subframe scheduling is finished, if one of the following conditions is met, the number of symbols of the PDCCH resource is increased by one.

The method comprises the following steps that (I), the condition that user equipment fails to allocate PDCCH resources exists in uplink or downlink carrier scheduling;

(II) CCE number of PDCCH resources that are not used at the end of uplink scheduling and downlink schedulingLess than Δ_plus，Δ_plus>0 represents a margin;

(III) the current PDCCH symbol number is not the maximum value.

Fig. 7 is a schematic structural diagram of an embodiment of an apparatus for allocating downlink control channel resources according to the present invention, and as shown in fig. 7, the apparatus 70 for allocating downlink control channel resources includes an allocating module 71 and a scheduling module 72. The allocation module 71 is configured to allocate PDCCH resources in the carrier aggregation cluster, and obtain a first uplink PDCCH resource of each uplink carrier and a downlink PDCCH resource of a downlink carrier; a scheduling module 72, configured to perform uplink scheduling on a first uplink PDCCH resource of the uplink carrier or perform downlink scheduling on a downlink PDCCH resource of the downlink carrier according to the obtained priority order of the user equipment until uplink scheduling or downlink scheduling is completed; the carrier aggregation cluster comprises one downlink carrier and at least two uplink carriers, and the PDCCH resources comprise at least two first uplink PDCCH resources and one first downlink PDCCH resource.

The allocation apparatus for downlink control channel resources provided in this embodiment is used to implement the technical scheme of the method embodiment shown in fig. 1, and the implementation principle and technical effect are similar, where a PDCCH resource in a carrier aggregation cluster is allocated by an allocation module to obtain a first uplink PDCCH resource for uplink scheduling on each uplink carrier and a downlink PDCCH resource for downlink scheduling on a downlink carrier, and then a scheduling module schedules each user equipment to be scheduled in sequence according to a priority from high to low, so that when an uplink carrier is greater than a downlink carrier, uplink scheduling or downlink scheduling after carrier aggregation is performed, and an application scenario that a large number of uplink service demands can be met.

In a second embodiment of the apparatus for allocating downlink control channel resources according to the present invention, on the basis of the foregoing embodiment, the allocating module 71 is specifically configured to:

dividing the PDCCH resources into uplink PDCCH resources and downlink PDCCH resources according to a preset fixed proportion;

acquiring an uplink bandwidth proportion corresponding to each uplink carrier according to a preset uplink bandwidth of each uplink carrier;

and allocating the uplink PDCCH resources according to an uplink bandwidth proportion corresponding to each uplink carrier to obtain the first uplink PDCCH resource of each uplink carrier.

Optionally, the allocating module 71 is further specifically configured to:

acquiring whether the uplink PDCCH resource allocation failure to the user equipment and/or the downlink PDCCH resource allocation failure to the user equipment exists after the last scheduling process is completed, and acquiring whether the uplink PDCCH resource or the downlink PDCCH resource is remained;

if only the uplink PDCCH resource allocation failure and the downlink PDCCH resource residue exist for the user equipment after the last scheduling is finished, or only the downlink PDCCH resource allocation failure and the uplink PDCCH resource residue exist for the user equipment, dividing the PDCCH resources into the uplink PDCCH resources and the downlink PDCCH resources according to a first allocation proportion, acquiring an uplink bandwidth proportion corresponding to each uplink carrier according to a preset uplink bandwidth of each uplink carrier, and then allocating the uplink PDCCH resources according to the uplink bandwidth proportion corresponding to each uplink carrier to acquire the first uplink PDCCH resource of each uplink carrier;

otherwise, dividing the PDCCH resources into uplink PDCCH resources and downlink PDCCH resources according to a preset fixed proportion, acquiring an uplink bandwidth proportion corresponding to each uplink carrier according to a preset uplink bandwidth of each uplink carrier, and allocating the uplink PDCCH resources according to the uplink bandwidth proportion corresponding to each uplink carrier to acquire the first uplink PDCCH resource of each uplink carrier;

and the first allocation proportion is the allocation proportion obtained after the residual resources in the uplink PDCCH resources or the downlink PDCCH resources are reallocated after the last scheduling is finished.

Optionally, the allocating module 71 is further specifically configured to:

distributing the PDCCH resources according to the number of the uplink carriers to obtain at least two sub-PDCCH resources with the same number as the uplink carriers;

distributing the sub-PDCCH resources corresponding to each uplink carrier according to a preset uplink and downlink resource proportion to obtain the first uplink PDCCH resource and the first downlink PDCCH resource;

the downlink PDCCH resources comprise all first downlink PDCCH resources.

Optionally, the allocating module 71 is further specifically configured to:

distributing the PDCCH resources according to the number of the uplink carriers to obtain at least two sub-PDCCH resources with the same number as the uplink carriers;

after the last scheduling process is completed, whether PDCCH resource allocation failure for uplink scheduling and/or downlink PDCCH resource allocation failure for downlink scheduling exist in each sub PDCCH resource or not is obtained, and whether PDCCH resources for uplink scheduling or downlink PDCCH resources for downlink scheduling in the sub PDCCH resources have surplus or not is obtained;

if only the PDCCH resource allocation failure of the uplink scheduling corresponding to the sub-PDCCH resource exists and the PDCCH resource used for the downlink scheduling exists residual after the last scheduling process is finished, or only the PDCCH resource allocation failure of the downlink scheduling corresponding to the sub-PDCCH resource exists and the PDCCH resource used for the uplink scheduling exists residual, the sub-PDCCH resource is allocated according to a first uplink and downlink resource proportion, and the first uplink PDCCH resource and the first downlink PDCCH resource used for the current scheduling are obtained;

otherwise, distributing the sub-PDCCH resources according to a preset uplink and downlink resource proportion to obtain the first uplink PDCCH resource and the first downlink PDCCH resource for the current scheduling;

the first uplink and downlink resource proportion is the uplink and downlink resource proportion after the PDCCH resource used for uplink scheduling or the rest of the PDCCH resource used for downlink scheduling in the sub-PDCCH resources is reallocated after the last scheduling process is completed; the downlink PDCCH resources include all first downlink PDCCH resources.

Optionally, the scheduling module 72 is specifically configured to:

acquiring the priority of each user equipment on the downlink carrier;

and according to the sequence of the priority of the user equipment from high to low, sequentially scheduling each user equipment on the downlink carrier until all shared channel resources on the downlink carrier are used, all downlink PDCCH resources are used or all user equipment are scheduled.

Optionally, the scheduling module 72 is specifically configured to:

acquiring the priority of each user equipment on each uplink carrier;

and according to the sequence of the priority of the user equipment on the uplink carrier from high to low, sequentially scheduling each user equipment on the uplink carrier until all shared channel resources on the uplink carrier are used, all first uplink PDCCH resources corresponding to the uplink carrier are used or all the user equipment on the uplink carrier are scheduled.

Optionally, the scheduling module 72 is specifically configured to:

acquiring the priority of each user equipment on each uplink carrier in downlink scheduling;

and sequentially performing downlink scheduling on each user equipment on the uplink carrier according to the sequence of the priority of the user equipment from high to low until all the shared channel resources on the downlink carrier are used, all the first downlink PDCCH resources are used or all the user equipment are scheduled.

Optionally, the scheduling module 72 is further specifically configured to:

acquiring the priority of each user equipment in uplink scheduling on each uplink carrier;

and sequentially carrying out uplink scheduling on each user equipment on the uplink carrier according to the sequence of the priority of the user equipment from high to low until all the shared channel resources on the uplink carrier are used, all the first uplink PDCCH resources are used or all the user equipment are scheduled.

The apparatus for allocating downlink control channel resources according to this embodiment is configured to execute the technical solution of the method embodiment shown in any one of fig. 1 to fig. 5, and the implementation principle and the technical effect are similar, which are not described herein again.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (12)

1. A method for allocating downlink control channel resources is characterized by comprising the following steps:

allocating Physical Downlink Control Channel (PDCCH) resources in a carrier aggregation cluster to obtain a first uplink PDCCH resource of each uplink carrier and downlink PDCCH resources of downlink carriers, wherein the carrier aggregation cluster comprises one downlink carrier and at least two uplink carriers;

according to the obtained priority sequence of the user equipment, performing uplink scheduling on a first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on a downlink PDCCH resource of the downlink carrier until the uplink scheduling or the downlink scheduling is completed;

the allocating the PDCCH resources in the carrier aggregation cluster to obtain the first uplink PDCCH resource of each uplink carrier and the downlink PDCCH resource of each downlink carrier includes:

acquiring whether the uplink PDCCH resource allocation failure to the user equipment and/or the downlink PDCCH resource allocation failure to the user equipment exists after the last scheduling process is completed, and acquiring whether the uplink PDCCH resource or the downlink PDCCH resource is remained;

if only the uplink PDCCH resource allocation failure and the downlink PDCCH resource residue exist for the user equipment after the last scheduling is finished, or only the downlink PDCCH resource allocation failure and the uplink PDCCH resource residue exist for the user equipment, dividing the PDCCH resources into the uplink PDCCH resources and the downlink PDCCH resources according to a first allocation proportion, acquiring an uplink bandwidth proportion corresponding to each uplink carrier according to a preset uplink bandwidth of each uplink carrier, and then allocating the uplink PDCCH resources according to the uplink bandwidth proportion corresponding to each uplink carrier to acquire the first uplink PDCCH resource of each uplink carrier;

otherwise, dividing the PDCCH resources into uplink PDCCH resources and downlink PDCCH resources according to a preset fixed proportion, acquiring an uplink bandwidth proportion corresponding to each uplink carrier according to a preset uplink bandwidth of each uplink carrier, and allocating the uplink PDCCH resources according to the uplink bandwidth proportion corresponding to each uplink carrier to acquire the first uplink PDCCH resource of each uplink carrier;

and the first allocation proportion is the allocation proportion obtained after the residual resources in the uplink PDCCH resources or the downlink PDCCH resources are reallocated after the last scheduling is finished.

2. The method of claim 1, wherein the performing uplink scheduling on a first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on a downlink PDCCH resource of the downlink carrier according to the obtained priority order of the ue until the scheduling of the resources is completed comprises:

acquiring the priority of each user equipment on the downlink carrier;

and according to the sequence of the priority of the user equipment from high to low, sequentially scheduling each user equipment on the downlink carrier until all shared channel resources on the downlink carrier are used, all downlink PDCCH resources are used or all user equipment are scheduled.

3. The method of claim 1, wherein the performing uplink scheduling on a first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on a downlink PDCCH resource of the downlink carrier according to the obtained priority order of the ue until the scheduling of the resources is completed comprises:

acquiring the priority of each user equipment on each uplink carrier;

and according to the sequence of the priority of the user equipment on the uplink carrier from high to low, sequentially scheduling each user equipment on the uplink carrier until all shared channel resources on the uplink carrier are used, all first uplink PDCCH resources corresponding to the uplink carrier are used or all the user equipment on the uplink carrier are scheduled.

4. A method for allocating downlink control channel resources is characterized by comprising the following steps:

allocating Physical Downlink Control Channel (PDCCH) resources in a carrier aggregation cluster to obtain a first uplink PDCCH resource of each uplink carrier and downlink PDCCH resources of downlink carriers, wherein the carrier aggregation cluster comprises one downlink carrier and at least two uplink carriers;

according to the obtained priority sequence of the user equipment, performing uplink scheduling on a first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on a downlink PDCCH resource of the downlink carrier until the uplink scheduling or the downlink scheduling is completed;

the allocating the PDCCH resources in the carrier aggregation cluster to obtain the first uplink PDCCH resource of each uplink carrier and the downlink PDCCH resource of each downlink carrier includes:

distributing the PDCCH resources according to the number of the uplink carriers to obtain at least two sub-PDCCH resources with the same number as the uplink carriers;

distributing the sub-PDCCH resources corresponding to each uplink carrier according to a preset uplink and downlink resource proportion to obtain the first uplink PDCCH resource and the first downlink PDCCH resource;

the downlink PDCCH resources comprise all first downlink PDCCH resources.

5. The method according to claim 4, wherein the performing uplink scheduling on the first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on the downlink PDCCH resource of the downlink carrier according to the obtained priority order of the UE until the scheduling of the resources is completed comprises:

acquiring the priority of each user equipment on each uplink carrier in downlink scheduling;

and sequentially performing downlink scheduling on each user equipment on the uplink carrier according to the sequence of the priority of the user equipment from high to low until all the shared channel resources on the downlink carrier are used, all the first downlink PDCCH resources are used or all the user equipment are scheduled.

6. The method according to claim 4, wherein the performing uplink scheduling on the first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on the downlink PDCCH resource of the downlink carrier according to the obtained priority order of the UE until the scheduling of the resources is completed comprises:

acquiring the priority of each user equipment in uplink scheduling on each uplink carrier;

and sequentially carrying out uplink scheduling on each user equipment on the uplink carrier according to the sequence of the priority of the user equipment from high to low until all the shared channel resources on the uplink carrier are used, all the first uplink PDCCH resources are used or all the user equipment are scheduled.

7. A method for allocating downlink control channel resources is characterized by comprising the following steps:

allocating Physical Downlink Control Channel (PDCCH) resources in a carrier aggregation cluster to obtain a first uplink PDCCH resource of each uplink carrier and downlink PDCCH resources of downlink carriers, wherein the carrier aggregation cluster comprises one downlink carrier and at least two uplink carriers;

according to the obtained priority sequence of the user equipment, performing uplink scheduling on a first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on a downlink PDCCH resource of the downlink carrier until the uplink scheduling or the downlink scheduling is completed;

the allocating the PDCCH resources in the carrier aggregation cluster to obtain the first uplink PDCCH resource of each uplink carrier and the downlink PDCCH resource of each downlink carrier includes:

distributing the PDCCH resources according to the number of the uplink carriers to obtain at least two sub-PDCCH resources with the same number as the uplink carriers;

after the last scheduling process is completed, whether PDCCH resource allocation failure for uplink scheduling and/or downlink PDCCH resource allocation failure for downlink scheduling exist in each sub PDCCH resource or not is obtained, and whether PDCCH resources for uplink scheduling or downlink PDCCH resources for downlink scheduling in the sub PDCCH resources have surplus or not is obtained;

if only the PDCCH resource allocation failure of the uplink scheduling corresponding to the sub-PDCCH resource exists and the PDCCH resource used for the downlink scheduling exists residual after the last scheduling process is finished, or only the PDCCH resource allocation failure of the downlink scheduling corresponding to the sub-PDCCH resource exists and the PDCCH resource used for the uplink scheduling exists residual, the sub-PDCCH resource is allocated according to a first uplink and downlink resource proportion, and the first uplink PDCCH resource and the first downlink PDCCH resource used for the current scheduling are obtained;

otherwise, distributing the sub-PDCCH resources according to a preset uplink and downlink resource proportion to obtain the first uplink PDCCH resource and the first downlink PDCCH resource for the current scheduling;

the first uplink and downlink resource proportion is the uplink and downlink resource proportion after the PDCCH resource used for uplink scheduling or the rest of the PDCCH resource used for downlink scheduling in the sub-PDCCH resources is reallocated after the last scheduling process is completed; the downlink PDCCH resources include all first downlink PDCCH resources.

8. The method according to claim 7, wherein the performing uplink scheduling on the first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on the downlink PDCCH resource of the downlink carrier according to the obtained priority order of the ue until the scheduling of the resources is completed includes:

acquiring the priority of each user equipment on each uplink carrier in downlink scheduling;

and sequentially performing downlink scheduling on each user equipment on the uplink carrier according to the sequence of the priority of the user equipment from high to low until all the shared channel resources on the downlink carrier are used, all the first downlink PDCCH resources are used or all the user equipment are scheduled.

9. The method according to claim 7, wherein the performing uplink scheduling on the first uplink PDCCH resource of the uplink carrier or performing downlink scheduling on the downlink PDCCH resource of the downlink carrier according to the obtained priority order of the ue until the scheduling of the resources is completed includes:

acquiring the priority of each user equipment in uplink scheduling on each uplink carrier;

and sequentially carrying out uplink scheduling on each user equipment on the uplink carrier according to the sequence of the priority of the user equipment from high to low until all the shared channel resources on the uplink carrier are used, all the first uplink PDCCH resources are used or all the user equipment are scheduled.

10. An apparatus for allocating downlink control channel resources, comprising:

the allocation module is used for allocating Physical Downlink Control Channel (PDCCH) resources in a carrier aggregation cluster to obtain a first uplink PDCCH resource of each uplink carrier and downlink PDCCH resources of downlink carriers, wherein the carrier aggregation cluster comprises one downlink carrier and at least two uplink carriers;

a scheduling module, configured to perform uplink scheduling on a first uplink PDCCH resource of the uplink carrier or perform downlink scheduling on a downlink PDCCH resource of the downlink carrier according to the obtained priority order of the ue until uplink scheduling or downlink scheduling is completed;

wherein, the allocation module is specifically configured to:

acquiring whether the uplink PDCCH resource allocation failure to the user equipment and/or the downlink PDCCH resource allocation failure to the user equipment exists after the last scheduling process is completed, and acquiring whether the uplink PDCCH resource or the downlink PDCCH resource is remained;

if only the uplink PDCCH resource allocation failure and the downlink PDCCH resource residue exist for the user equipment after the last scheduling is finished, or only the downlink PDCCH resource allocation failure and the uplink PDCCH resource residue exist for the user equipment, dividing the PDCCH resources into the uplink PDCCH resources and the downlink PDCCH resources according to a first allocation proportion, acquiring an uplink bandwidth proportion corresponding to each uplink carrier according to a preset uplink bandwidth of each uplink carrier, and then allocating the uplink PDCCH resources according to the uplink bandwidth proportion corresponding to each uplink carrier to acquire the first uplink PDCCH resource of each uplink carrier;

otherwise, dividing the PDCCH resources into uplink PDCCH resources and downlink PDCCH resources according to a preset fixed proportion, acquiring an uplink bandwidth proportion corresponding to each uplink carrier according to a preset uplink bandwidth of each uplink carrier, and allocating the uplink PDCCH resources according to the uplink bandwidth proportion corresponding to each uplink carrier to acquire the first uplink PDCCH resource of each uplink carrier;

and the first allocation proportion is an allocation proportion source obtained after the residual resources in the uplink PDCCH resources or the downlink PDCCH resources are reallocated after the last scheduling is finished.

11. An apparatus for allocating downlink control channel resources, comprising:

the allocation module is used for allocating Physical Downlink Control Channel (PDCCH) resources in a carrier aggregation cluster to obtain a first uplink PDCCH resource of each uplink carrier and downlink PDCCH resources of downlink carriers, wherein the carrier aggregation cluster comprises one downlink carrier and at least two uplink carriers;

a scheduling module, configured to perform uplink scheduling on a first uplink PDCCH resource of the uplink carrier or perform downlink scheduling on a downlink PDCCH resource of the downlink carrier according to the obtained priority order of the ue until uplink scheduling or downlink scheduling is completed;

wherein, the allocation module is specifically configured to:

distributing the PDCCH resources according to the number of the uplink carriers to obtain at least two sub-PDCCH resources with the same number as the uplink carriers;

distributing the sub-PDCCH resources corresponding to each uplink carrier according to a preset uplink and downlink resource proportion to obtain the first uplink PDCCH resource and the first downlink PDCCH resource;

the downlink PDCCH resources comprise all first downlink PDCCH resources.

12. An apparatus for allocating downlink control channel resources, comprising:

the allocation module is used for allocating Physical Downlink Control Channel (PDCCH) resources in a carrier aggregation cluster to obtain a first uplink PDCCH resource of each uplink carrier and downlink PDCCH resources of downlink carriers, wherein the carrier aggregation cluster comprises one downlink carrier and at least two uplink carriers;

a scheduling module, configured to perform uplink scheduling on a first uplink PDCCH resource of the uplink carrier or perform downlink scheduling on a downlink PDCCH resource of the downlink carrier according to the obtained priority order of the ue until uplink scheduling or downlink scheduling is completed;

wherein, the allocation module is specifically configured to:

distributing the PDCCH resources according to the number of the uplink carriers to obtain at least two sub-PDCCH resources with the same number as the uplink carriers;

after the last scheduling process is completed, whether PDCCH resource allocation failure for uplink scheduling and/or downlink PDCCH resource allocation failure for downlink scheduling exist in each sub PDCCH resource or not is obtained, and whether PDCCH resources for uplink scheduling or downlink PDCCH resources for downlink scheduling in the sub PDCCH resources have surplus or not is obtained;

if only the PDCCH resource allocation failure of the uplink scheduling corresponding to the sub-PDCCH resource exists and the PDCCH resource used for the downlink scheduling exists residual after the last scheduling process is finished, or only the PDCCH resource allocation failure of the downlink scheduling corresponding to the sub-PDCCH resource exists and the PDCCH resource used for the uplink scheduling exists residual, the sub-PDCCH resource is allocated according to a first uplink and downlink resource proportion, and the first uplink PDCCH resource and the first downlink PDCCH resource used for the current scheduling are obtained;

otherwise, distributing the sub-PDCCH resources according to a preset uplink and downlink resource proportion to obtain the first uplink PDCCH resource and the first downlink PDCCH resource for the current scheduling;

the first uplink and downlink resource proportion is the uplink and downlink resource proportion after the PDCCH resource used for uplink scheduling or the rest of the PDCCH resource used for downlink scheduling in the sub-PDCCH resources is reallocated after the last scheduling process is completed; the downlink PDCCH resources include all first downlink PDCCH resources.