WO2021082796A1

WO2021082796A1 - Embb cce resource allocation method and apparatus

Info

Publication number: WO2021082796A1
Application number: PCT/CN2020/116210
Authority: WO
Inventors: 王子
Original assignee: 中兴通讯股份有限公司
Priority date: 2019-10-28
Filing date: 2020-09-18
Publication date: 2021-05-06
Also published as: CN112738890A

Abstract

The present invention provides an eMBB CCE resource allocation method and apparatus. The method comprises: during eMBB CCE resource allocation, if the required CCE resource can be allocated within RB resources occupied by the currently allocated CCE, distributing the required CCE resource in the RB resources. In the present invention, the eMBB CCE resource allocation is denser, and the probability of conflicts of uRLLC and eMBB resources is reduced, thereby reducing the influence of the uRLLC on resource preemption of an eMBB downlink control channel.

Description

eMBB CCE resource allocation method and device

Technical field

The present invention relates to the field of communications, and in particular, to a method and device for allocating resources of an enhanced mobile broadband (Enhanced Mobile Broadband, eMBB) control channel element (Control Channel element, CCE).

Background technique

New Radio (NR) ultra-reliable low-latency communication (ultra Reliable Low-latency Communication, uRLLC) is a highly reliable, low-latency network slicing service with a higher priority than eMBB. In terms of scheduling timing, the time processing granularity of eMBB is slot and uRLLC is Minislot. For the same air interface moment, once the concurrent downlink scheduling carried by uRLLC and eMBB occurs in the cell, and RB resource conflict occurs, uRLLC punctures the downlink control channel allocated by eMBB in a preemptive manner to ensure high-priority transmission of uRLLC, but uRLLC is for eMBB Downlink control channel puncturing will affect eMBB transmission.

Summary of the invention

The embodiment of the present invention provides an eMBB CCE resource allocation method and device, so as to at least solve the problem that the uRLLC puncturing the eMBB downlink control channel in the related art will affect the eMBB transmission.

According to an embodiment of the present invention, an eMBB CCE resource allocation method is provided, which includes: during eMBB CCE resource allocation, if the required CCE resources can be allocated within the RB resources occupied by the currently allocated CCEs, then The required CCE resources are allocated in the RB resources.

Wherein, the method further includes: if the required CCE resources cannot be allocated within the RB resources occupied by the currently allocated CCEs, then in the direction from low to high or from high to low, they are next to the physical downlink control channel (Physical Downlink Control Channel). Channel, PDCCH) occupied resource block (Resource Block, RB) or control resource set (control resource set, CORESET) edge to perform required CCE resource allocation.

Wherein, the method further includes: eMBB scheduler statistics uRLLC scheduling RB usage rate;

If the uRLLC RB usage rate reaches the threshold more than n times within the preset time period, the eMBB scheduler controls the allocation of CCE resources in the subsequent z slots, where n and z are both positive integers.

Wherein, the eMBB scheduler controlling the allocation of CCE resources in the subsequent z slots includes: determining whether the number of RBs occupied by the allocated PDCCH reaches k; if so, no CCE resource allocation is performed in the subsequent z slots, where k is a positive integer.

Wherein, the method further includes: judging whether the CCE aggregation degree of the currently scheduled user reaches a threshold, and if so, not performing CCE resource allocation in the subsequent z slots.

Wherein, the method further includes: through the interaction channel established between the eMBB and uRLLC, at the downlink scheduling time corresponding to the air interface Minislot0, the eMBB notifies the uRLLC of the PDCCH resource allocation result, where the allocation result includes the air interface time and the PDCCH occupied RB resource set.

Wherein, after eMBB notifies uRLLC of the PDCCH resource allocation result, it also includes: when the uRLLC allocates downlink RB resources, it allocates resources only on RBs that are not occupied by eMBB PDCCH resources in its partial bandwidth (Bandwidth Part, BWP). And send the information occupied by the PDSCH RB on the local side to the eMBB.

Among them, the DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the PDCCH of eMBB. The method further includes: determining the first t Minislots of the current Minislot 0 and the RB resources occupied by the eMBB PDCCH Within the range, whether the base station sends the uRLLC downlink air interface data of the scheduled user; if so, the solution corresponding to the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) closest to the Minislot 0 in t Minislots is cached on the UE side The modulation reference signal (Demodulation Reference Signal DMRS) is used to demodulate the single-symbol PDSCH without DMRS sent by the base station on the RB of the PDSCH.

Among them, the DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the PDCCH of eMBB. The method further includes: determining the first t Minislots of the current Minislot 0 and the RB resources occupied by the eMBB PDCCH Within the range, whether the base station has uRLLC downlink air interface data transmission for the scheduled user; if so, the base station transmits a single-symbol PDSCH without DMRS on the RB resources that have previously transmitted the PDSCH.

According to another embodiment of the present invention, a device for allocating eMBB CCE resources is provided, including: a first allocation module configured to allocate CCE resources when required CCE resources can be occupied by currently allocated CCEs. In the case of allocation within RB resources, the required CCE resources are allocated within the RB resources.

Wherein, the device further includes: a second allocation module, which is set to be adjacent to each other in a direction from low to high or from high to low when the required CCE resources cannot be allocated within the RB resources occupied by the currently allocated CCEs The RB already occupied by the PDCCH or the edge corresponding to the CORESET performs the required CCE resource allocation.

Wherein, the device further includes: a statistics module, which is set to count the uRLLC scheduling RB usage rate; a control module, which is used to control the following z when the uRLLC RB usage rate reaches the threshold more than n times within a preset time period CCE resource allocation in the slot, where n and z are both positive integers.

Wherein, the control module includes: a first control unit configured to control not to perform CCE resource allocation in the subsequent z slots when the number of RBs occupied by the allocated PDCCH reaches k, where k is a positive integer.

Wherein, the control module includes: a second control unit configured to control not to perform CCE resource allocation of the currently scheduled user in the subsequent z slots when the CCE aggregation degree of the currently scheduled user reaches a threshold.

Wherein, the device further includes: a notification module configured to notify uRLLC of the PDCCH resource allocation result at the downlink scheduling time corresponding to the air interface Minislot0 through the interaction channel established between the eMBB and uRLLC, where the allocation result includes air interface time And the set of RB resources occupied by the PDCCH.

Wherein, the DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the PDCCH of eMBB. The device further includes: a second judgment module configured to judge the first t Minislots of the current Minislot0, Within the range of the RB resources occupied by the eMBB PDCCH, whether the base station has uRLLC downlink air interface data transmission to the scheduled user; the buffer module is used for buffering on the UE side when the judgment result of the second judgment module is yes The DMRS corresponding to the PDSCH closest to the Minislot0 in the t Minislots is used to demodulate the single-symbol PDSCH without DMRS sent by the base station on the RB of the PDSCH.

Wherein, the DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the PDCCH of eMBB. The device further includes: a third judgment module configured to judge the first t Minislots of the current Minislot0, Within the range of the RB resources occupied by the eMBB PDCCH, whether the base station has sent uRLLC downlink air interface data to the scheduled user; the sending module is set to send it before when the judgment result of the third judgment module is yes A single-symbol PDSCH without DMRS is transmitted on the RB resources of the PDSCH.

According to another embodiment of the present invention, there is also provided a storage medium in which a computer program is stored, wherein the computer program is configured to execute the steps in any one of the foregoing method embodiments when running.

According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program to execute any of the above Steps in the method embodiment.

In the embodiment of the present invention, the eMBB CCE resource allocation is made more intensive, thereby reducing the probability of conflict between uRLLC and eMBB resources, thereby reducing the influence of uRLLC on eMBB control channel resource preemption.

Description of the drawings

The drawings described here are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is a flowchart of an eMBB CCE resource allocation method according to an embodiment of the present invention;

Figure 2 is a schematic diagram of a radio resource configuration scenario according to an embodiment of the present invention;

Fig. 3 is a flow chart of CCE resource aggregation and allocation according to an embodiment of the present invention;

Fig. 4 is a flow chart of CCE resource allocation restriction according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a strategy for extending the effective period of DMRS according to an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of an eMBB CCE resource allocation device according to an embodiment of the present invention;

Fig. 7 is a schematic diagram of an eMBB CCE resource allocation device module according to an optional embodiment of the present invention.

Detailed ways

Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict.

It should be noted that the terms “first” and “second” in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence.

For the scenario of coordinated scheduling of NR uRLLC network slices and eMBB slices, in order to reduce the impact of resource puncturing on eMBB under the premise of ensuring high priority processing of uRLLC, an embodiment of the present invention provides an eMBB CCE resource allocation method.

Fig. 1 is a flowchart of an eMBB CCE resource allocation method according to an embodiment of the present invention. As shown in Fig. 1, the process includes the following steps:

Step S102: During eMBB CCE resource allocation, if the required CCE resource can be allocated in the RB resource occupied by the currently allocated CCE, then the required CCE resource is allocated in the RB resource.

Before step S102 in this embodiment, it may further include: judging whether the required CCE resources can be allocated within the RB resources occupied by the currently allocated CCEs.

In step S102 of this embodiment, if the required CCE resources cannot be allocated within the RB resources occupied by the currently allocated CCEs, the RBs occupied by the PDCCH or the corresponding RBs are immediately adjacent to the PDCCH in the direction from low to high or from high to low. The edge of CORESET performs the required CCE resource allocation.

After step S102 in this embodiment, it may further include: the eMBB scheduler statistics the uRLLC scheduling RB usage rate; if the uRLLC RB usage rate reaches the threshold more than n times within the preset time period, the eMBB scheduler controls the subsequent z CCE resource allocation in a slot, where n and z are both positive integers.

In this embodiment, the eMBB scheduler controlling the allocation of CCE resources in the subsequent z slots includes: judging whether the number of RBs occupied by the allocated PDCCH reaches k, and if so, no CCE is performed in the subsequent z slots Resource allocation, where k is a positive integer.

In this embodiment, the eMBB scheduler controlling the allocation of CCE resources in the subsequent z slots may also include: or judging whether the CCE aggregation degree of the currently scheduled user reaches a threshold, and if so, not performing CCE in the subsequent z slots Resource allocation.

In this embodiment, it may also include the step of: through the interaction channel established between the eMBB and uRLLC, at the downlink scheduling time corresponding to the air interface Minislot0, the eMBB notifies the uRLLC of the PDCCH resource allocation result, where the allocation result includes the air interface time and The set of RB resources occupied by the PDCCH. When the uRLLC allocates downlink RB resources, it allocates resources only on RBs that are not occupied by eMBB and PDCCH resources in its BWP bandwidth, and sends the situation of PDSCH RB occupation on the local side to the eMBB.

In this embodiment, for the scenario where the DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the PDCCH of eMBB, it may include the step of judging that it is in the first t Minislots of the current Minislot 0, and the eMBB Within the range of RB resources occupied by the PDCCH, whether the base station sends uRLLC downlink air interface data to the scheduled user; if so, buffer the DMRS corresponding to the PDSCH closest to the Minislot 0 in t Minislots on the UE side for demodulation The single-symbol PDSCH without DMRS sent by the base station on the RB of the PDSCH.

In this embodiment, for the scenario where the DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the PDCCH of eMBB, it may also include the step of judging that it is in the first t Minislots of the current Minislot 0, Within the range of RB resources occupied by the eMBB PDCCH, whether the base station has uRLLC downlink air interface data transmission to the scheduled user; if so, the base station transmits a single-symbol PDSCH without DMRS on the RB resources that have previously transmitted the PDSCH.

In this embodiment, the strategy of avoiding downlink RB scheduling and extending the effective time of DMRS is used to avoid the influence of uRLLC on the eMBB control channel, and at the same time, the uRLLC service rate is guaranteed as much as possible.

In order to facilitate the understanding of the technical solutions provided by the embodiments of the present invention, a detailed description will be given below in conjunction with embodiments with application scenarios.

Figure 2 is a wireless resource configuration scenario according to an embodiment of the present invention. As shown in Figure 1, the Minislot resource configuration of eMBB PDCCH is: 2 OFDM symbols form 1 Minislot, and 14 symbols in 1 Slot are cut into 7 Minislot uRLLC In the scheduling sequence, the first symbol of Minislot0 is eMBB PDCCH.

In Minislot configured with eMBB PDCCH, if the PDSCH sent by uRLLC data conflicts with the RB position of the PDCCH occupied by eMBB, the PDSCH of uRLLC will puncture the PDCCH of eMBB, which may cause the UE downlink control information (Down Control Information, DCI). ) The detection fails, which causes the eMBB transmission to be lost this time and the HARQ status is abnormal. The control channel is punctured, which has more serious consequences than the data channel puncturing, and should be avoided as much as possible.

More specifically, in the above situation, if the DMRS of uRLLC is configured on the first symbol of each Minislot, then due to the existence of DMRS, the position where uRLLC PDSCH and eMBB PDCCH overlap in the frequency domain is the second symbol on Minislot0. The two symbols cannot be used to send uRLLC downlink data, because the UE needs to use DMRS for demodulation. Sending PDSCH is accompanied by sending DMRS on the first symbol configured, which will also cause eMBB PDCCH to be punctured.

At present, the simplest solution to the above situation is to not schedule in Minislot0, or configure eMBB and uRLLC frequency division cell bandwidth, and adopt a semi-static isolation method to prevent resource conflicts. The former will lead to the lack of Minislot0 scheduling, which will increase the critical delay of uRLLC and decrease the flow; the latter will cause the available bandwidth of uRLLC to decrease, packet fragmentation, increase the delay, and decrease the flow.

In order to solve the eMBB transmission problem caused by puncturing the eMBB PDCCH resources by the radio air interface resources (including PDSCH and DMRS) occupied by the uRLLC bearer in the Minislot configured with eMBB PDCCH, this embodiment provides a scheduling strategy to solve the above problem . The scheduling strategy mainly includes the following three strategies:

Strategy 1: In order to achieve scheduling avoidance between the RB occupied by the eMBB PDCCH and the RB occupied by the uRLLC PDSCH, special treatment is required for the eMBB CCE resource allocation, and the CCE resource allocation is not discrete as much as possible, so that the allocated PDCCH resources are aggregated. In order to ensure high-priority transmission of uRLLC, the use of eMBB and CCE resources should also tend to be conservative.

As shown in Figure 3, Strategy 1 can use the following steps to try to gather the allocated PDCCH resources:

Step S301, scheduling users to perform eMBB CCE resource allocation;

Step S302: It is judged whether the required CCE resource can be allocated in the RB resource occupied by the currently allocated CCE, if it can be allocated in the RB resource occupied by the currently allocated CCE, then step S303 is executed, if not, then execute Step S304;

Step S303: Allocate CCEs to this RB resource range to realize PDCCH resource aggregation;

Step S304, it is judged whether there are other CCE resources to complete the allocation, if yes, then step S305 is executed, if otherwise, step S306 is executed;

In step S305, resource allocation is performed on the RBs immediately adjacent to the PDCCH occupied by the PDCCH in the direction from low to high or from high to low, so as to realize PDCCH resource aggregation;

In step S306, resource allocation is performed from the edge of CORESET in the direction from low to high or from high to low, so as to also realize PDCCH resource aggregation.

As shown in Figure 4, Strategy 1 may further include the following steps:

Step S401: In the QoS of the eMBB scheduler, add a counter for the uRLLC scheduling RB usage rate, set m to be the uRLLC RB usage rate threshold, and n to be the threshold for the number of times the uRLLC scheduling RB exceeds m times within the statistical sliding window t. Within the sliding window t, count the number of times the uRLLC RB usage rate exceeds the threshold.

Step S402: It is judged whether the uRLLC RB usage rate exceeds the threshold m for n times within the sliding window t. If so, it is considered that it is a heavy load period of the uRLLC service, and step S403 is executed, and if not, step S407 is executed;

Step S403, the eMBB scheduler will adopt a strategy of restricting CCE resource allocation in the subsequent z slots;

Step S404: It is judged whether the number of RBs occupied by the allocated PDCCH reaches k, if so, step S406 is executed, and if not, step S405 is executed;

Step S405: It is judged whether the CCE aggregation degree of the user to be scheduled currently exceeds j, if so, step S406 is executed, and if not, step S407 is executed;

In step S406, the eMBB scheduler does not allocate CCE resources in the subsequent z slots, and abandons eMBB users with poor channel conditions within this period of time.

Step S407, the eMBB scheduler allocates CCE resources normally.

In this embodiment, the above m, n, t, z, k, and j are all configurable parameters.

Through the above strategy 1, eMBB CCE resource allocation is more intensive or restricted, more RB resources are reserved for uRLLC, and uRLLC high-priority transmission is guaranteed to the greatest extent.

Strategy 2: Through the interactive channel established between eMBB and uRLLC, at the downlink scheduling time corresponding to the air interface Minislot0, eMBB notifies uRLLC of the PDCCH channel resource allocation result. The notification content mainly includes air interface time and PDCCH occupancy of RB resource sets, and uRLLC is performing downlink During RB resource allocation, actively avoid RBs occupied by eMBB PDCCH, and only use RBs that are not occupied by eMBB PDCCH resources in its BWP bandwidth. At the same time, uRLLC needs to send the PDSCH RB occupancy on the local side to the eMBB to complete the statistics in step S401 of strategy 1.

Strategy 3: The DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the common configuration of PDCCH of eMBB, as shown in Figure 2. After completing the processing of scheduling strategies 1 and 2 on Minislot0, there is no RB overlap between uRLLC PDSCH and eMBB PDCCH, and there is no uRLLC puncturing eMBB PDCCH. At this time, the second symbol of the RB occupied by eMBB PDCCH is silent. In order to make uRLLC use this part of the air interface resources, strategy 3 does the following:

Processing 1: If in the first t Minislots of the current Minislot0, within the RB resource range occupied by the eMBB PDCCH at this time, there is uRLLC downlink air interface data transmission for the user, then the UE side buffers the PDSCH closest to this Minislot0 in t. DMRS is used to demodulate the single-symbol PDSCH without DMRS that the Minislot0 base station may send on these RBs.

Processing 2: If in the first t Minislots of the current Minislot0, within the RB resource range occupied by the eMBB PDCCH at this time, the base station has the uRLLC downlink air interface data transmission for the user, then the Minislot0 base station can transmit PDSCH RBs before these The single-symbol PDSCH without DMRS is transmitted on the resource.

As shown in Figure 5, Minislot5/6 have scheduling, and the UE buffers the DMRS closest to Minislot0, that is, the DMRS of Minislot6 is used to demodulate the uRLLC PDSCH of Minislot0, where the scheduling RB of Minislot5/6 overlaps the scheduling RB of Minislot0 .

In strategy 3, the time stability of the channel is used. As shown in Fig. 5, t in processing 1 and 2 can be configured, but t should not be set too large for reliability, and should be less than the distance between the pre-DMRS in the protocol and the additional DMRS at the earliest position. In this way, the RB resources occupied by eMBB PDCCH on Minislot0 can also be fully utilized. Especially when the uRLLC bearer is in high-load operation, there is a high probability that Minislot before Minislot0 is scheduled, so Minislot0 can form effective transmission of uRLLC, thereby reducing Delay, increase the flow, and at the same time not affect the control channel of eMBB.

It should be noted that in this embodiment, the aforementioned strategies 1 to 3 can be used individually or in combination according to actual scenarios.

In this embodiment, through the above scheduling strategy, the abnormal service caused by uRLLC preempting the eMBB control channel is avoided, and a configurable DMRS effective strategy is adopted to make uRLLC use as much radio resources as possible without affecting eMBB. Improve uRLLC downlink throughput.

In the above-mentioned embodiment of the present invention, this solution adopts the special CCE allocation algorithm of eMBB and the targeted RB allocation algorithm of uRLLC. Through the cooperative interaction of uRLLC and eMBB, the overlapping puncturing of downlink RB resources is avoided, and the A strategy of extending the effective period of DMRS realizes the effective utilization of air interface resources, which can effectively reduce the impact of uRLLC on the eMBB control channel resource preemption, and improve the delay response and effective bandwidth capacity of uRLLC, and optimize the uRLLC user experience.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is Better implementation. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) execute the method described in each embodiment of the present invention.

In this embodiment, an eMBB CCE resource allocation device is also provided, and the device is used to implement the above-mentioned embodiments and preferred implementations, and those that have been described will not be repeated. As used below, the term "module" or "unit" may be a combination of software and/or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented by software, implementation by hardware or a combination of software and hardware is also possible and conceived.

FIG. 6 is a structural block diagram of an eMBB CCE resource allocation device according to an embodiment of the present invention. As shown in FIG. 6, the device includes a first allocation module 10.

The first allocation module 10 is configured to allocate the required CCE resources in the RB resources when the required CCE resources can be allocated in the RB resources occupied by the currently allocated CCEs during eMBB CCE resource allocation.

FIG. 7 is a structural block diagram of an eMBB CCE resource allocation device according to an optional embodiment of the present invention. As shown in FIG. 7, the device includes all the modules shown in FIG. 6, and also includes a first judgment module 20 and a second allocation Module 30, statistics module 40 and control module 50.

The first judging module 20 is configured to judge whether the required CCE resources can be allocated within the RB resources occupied by the currently allocated CCEs.

The second allocation module 30 is set to the condition that the required CCE resources cannot be allocated within the RB resources occupied by the currently allocated CCEs, in the direction from low to high or high to low, next to the RB occupied by the PDCCH or corresponding CORESET Allocate the required CCE resources on the edge of

The statistics module 40 is configured to count the utilization rate of the uRLLC scheduling RB. The control module 50 is configured to control the allocation of CCE resources in the subsequent z slots when the uRLLC and RB usage rate reaches the threshold more than n times within a preset time period, where n and z are both positive integers.

Wherein, the control module 50 includes a first control unit 51 and a second control unit 52.

The first control unit 51 is configured to control not to perform CCE resource allocation in the subsequent z slots when the number of RBs occupied by the allocated PDCCH reaches k, where k is a positive integer.

The second control unit 52 is configured to control not to perform CCE resource allocation for the currently scheduled user in the subsequent z slots when the CCE aggregation degree of the currently scheduled user reaches the threshold.

In an embodiment, the device further includes a notification module 60. The notification module 60 is configured to notify the uRLLC of the PDCCH resource allocation result at the downlink scheduling time corresponding to the air interface Minislot0 through the interaction channel established between the eMBB and the uRLLC, where the allocation result includes the air interface time and the RB resource set occupied by the PDCCH.

In an embodiment, the DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the PDCCH of eMBB, the device further includes a second judgment module 70 and a buffer module 80

The second judging module 70 is configured to judge whether the base station sends uRLLC downlink air interface data to the scheduled user within the first t Minislots of the current Minislot 0 within the RB resource range occupied by the eMBB PDCCH.

The buffer module 80 is configured to buffer the DMRS corresponding to the PDSCH closest to the Minislot0 in t Minislots on the UE side when the judgment result of the second judgment module is yes, for demodulating the base station in the A single-symbol PDSCH without DMRS sent on the RB of the PDSCH.

In an embodiment, the DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the PDCCH of eMBB. The device further includes a third determining module 90 and a sending module 100.

The third determining module 90 is configured to determine whether the base station has uRLLC downlink air interface data transmission to the scheduled user within the first t Minislots of the current Minislot 0 and within the RB resource range occupied by the eMBB PDCCH;

The sending module 100 is configured to send a single-symbol PDSCH without DMRS on the RB resources that have previously sent the PDSCH when the judgment result of the third judgment module is yes.

It should be noted that each of the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following manner, but not limited to this: the above modules are all located in the same processor; or, the above modules can be combined in any combination. The forms are located in different processors.

The embodiment of the present invention also provides a storage medium in which a computer program is stored, wherein the computer program is configured to execute the steps in any one of the foregoing method embodiments when running.

Optionally, in this embodiment, the foregoing storage medium may include, but is not limited to: U disk, Read-Only Memory (Read-Only Memory, ROM for short), Random Access Memory (Random Access Memory, RAM for short), Various media that can store computer programs such as mobile hard disks, magnetic disks, or optical disks.

An embodiment of the present invention also provides an electronic device, including a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the foregoing method embodiments.

Optionally, for specific examples in this embodiment, reference may be made to the examples described in the above-mentioned embodiments and optional implementation manners, and details are not described herein again in this embodiment.

Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present invention can be implemented by a general computing device, and they can be concentrated on a single computing device or distributed in a network composed of multiple computing devices. Above, alternatively, they can be implemented with program codes executable by the computing device, so that they can be stored in the storage device for execution by the computing device, and in some cases, can be executed in a different order than here. Perform the steps shown or described, or fabricate them into individual integrated circuit modules respectively, or fabricate multiple modules or steps of them into a single integrated circuit module for implementation. In this way, the present invention is not controlled by any specific combination of hardware and software.

The above are only preferred embodiments of the present invention and are not used to control the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

An enhanced mobile broadband control channel element eMBB CCE resource allocation method includes:

In eMBB CCE resource allocation, if the required control channel element CCE resource can be allocated in the resource block RB resource occupied by the currently allocated CCE, then the required CCE resource is allocated in the RB resource.
The method according to claim 1, further comprising:

If the required control channel element CCE resource cannot be allocated in the resource block RB resource occupied by the currently allocated CCE, it will be next to the RB occupied by the physical downlink control channel PDCCH or the corresponding RB in the direction from low to high or from high to low. The edge of the control resource set CORESET performs the required CCE resource allocation.
The method according to claim 1, further comprising:

The eMBB scheduler counts the utilization rate of RB scheduling in the ultra-reliable low-latency communication uRLLC;

If the uRLLC RB usage rate reaches the threshold more than n times within the preset time period, the eMBB scheduler controls the allocation of CCE resources in the subsequent z time slots, where n and z are both positive integers.
The method according to claim 1, wherein the eMBB scheduler controlling the allocation of CCE resources in the subsequent z slots comprises:

It is judged whether the number of RBs occupied by the allocated PDCCH reaches k, and if so, no CCE resource allocation is performed in the subsequent z slots, where k is a positive integer.
The method according to claim 1, further comprising:

It is judged whether the CCE aggregation degree of the currently scheduled user reaches the threshold, and if so, no CCE resource allocation is performed in the subsequent z slots.
The method according to claim 1, further comprising:

Through the interaction channel established between the eMBB and the uRLLC, at the downlink scheduling time corresponding to the air interface mini-slot Minislot0, the eMBB notifies the uRLLC of the PDCCH resource allocation result, where the allocation result includes the air interface time and the RB resource set occupied by the PDCCH.
The method according to claim 1, wherein after eMBB notifies uRLLC of the PDCCH resource allocation result, the method further comprises:

When the uRLLC allocates downlink RB resources, it allocates resources only on RBs that are not occupied by eMBB PDCCH resources in part of its broadband BWP bandwidth, and sends the information occupied by the PDSCH RB on the local side to the eMBB.
The method according to claim 1, wherein the demodulation reference signal DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the PDCCH of eMBB, the method further comprises:

Determine whether the base station sends uRLLC downlink air interface data to the scheduled user in the first t Minislots of the current Minislot 0 within the RB resource range occupied by the eMBB PDCCH;

If so, the DMRS corresponding to the physical downlink shared channel PDSCH closest to the Minislot0 in t Minislots is buffered on the UE side for demodulating the single-symbol PDSCH without DMRS sent by the base station on the RB of the PDSCH.
The method according to claim 1, wherein the DMRS of uRLLC is configured on the first symbol of each Minislot, and the first symbol is the PDCCH of eMBB, the method further comprises:

Determine whether the base station sends uRLLC downlink air interface data to the scheduled user in the first t Minislots of the current Minislot 0 within the RB resource range occupied by the eMBB PDCCH;

If there is uRLLC downlink air interface data transmission for the scheduled user, the base station transmits a single-symbol PDSCH without DMRS on the RB resources that have previously transmitted the PDSCH.
An enhanced mobile broadband control channel element eMBB CCE resource allocation device includes:

The first allocation module is configured to allocate the required CCE resources in the RB resources when the required CCE resources can be allocated in the RB resources occupied by the currently allocated CCEs during eMBB CCE resource allocation.
A computer-readable storage medium in which a computer program is stored, wherein the computer program is configured to execute the method described in any one of claims 1 to 9 when the computer program is run.
An electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the method described in any one of claims 1 to 9.