CN114125860A

CN114125860A - Method and device for allocating NR PDCCH (physical Downlink control channel) resources under spectrum sharing

Info

Publication number: CN114125860A
Application number: CN202010905364.XA
Authority: CN
Inventors: 齐丙花; 贾保灵; 刘蓉; 徐明宇
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2022-03-01
Also published as: WO2022048199A1

Abstract

The disclosure discloses a method and a device for allocating NR PDCCH resources under spectrum sharing, which are used for solving the problem of resource conflict, and the method comprises the following steps: the network side sets a Coreset resource associated with an exclusive search space of the NR UE to occupy the full bandwidth in a frequency domain, occupy non-first 3 symbols and lasting N symbols in a downlink time slot in a time domain, and have no conflict with a designated symbol, wherein the designated symbol comprises: common control channels and symbols occupied by demodulation signals in the NR system and the LTE system; therefore, in a spectrum sharing mode, the network side can accurately allocate the resources occupied by the NR PDCCH to the target NR UE in a downlink time slot by adopting a dynamic adjustment mode, so that the probability of allocation conflict between the resources occupied by the NR PDCCH and the resources occupied by the LTE PDCCH is effectively reduced, and the spectrum utilization efficiency can be better improved.

Description

Method and device for allocating NR PDCCH (physical Downlink control channel) resources under spectrum sharing

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for allocating NR PDCCH resources under spectrum sharing.

Background

The existing wireless communication system relates to a Long Term Evolution (LTE) system and a New Radio (NR) system of the fifth Generation (5th Generation, 5G). With the development of wireless communication technology, problems of spectrum resource shortage, low spectrum resource utilization rate, serious spectrum fragmentation and the like occur, and the emergence of carrier aggregation technology and dynamic spectrum sharing technology brings about high-efficiency utilization of spectrum.

However, in the 5G NR mobile communication system, uplink and Downlink scheduled resources need to be carried in a Physical Downlink Control Channel (PDCCH); a User Equipment (UE) acquires time-frequency resources allocated for scheduling by monitoring a PDCCH. In order to better improve the uplink spectrum utilization efficiency, a spectrum sharing technology needs to be adopted, and theoretically, spectrum sharing can be divided into two modes:

1) a partially shared spectrum approach.

Referring to fig. 1A, when the partially shared spectrum scheme is used, the maximum available bandwidth of the NR system is greater than that of the LTE system, and the time-frequency resources used by the NR PDCCH are allocated on the bandwidth available to the NR system but not overlapping with the LTE system.

2) The spectrum is completely shared.

Referring to fig. 1B, when the full spectrum sharing mode is adopted, the maximum available bandwidths of the NR system and the LTE system are the same, for example, the maximum available bandwidths of the NR system and the LTE system are both 20 MHz; in the complete spectrum sharing mode, the LTE PDCCH fixedly occupies frequency domain resources of a full frequency band, and the time frequency resources occupied by the NR PDCCH need to be dynamically configured accordingly.

In the way of completely sharing the spectrum, how to avoid the dynamic configuration of the NR PDCCH does not affect the LTE PDCCH, and an effective solution is not provided for time-frequency resource allocation of the NR PDCCH in the prior art.

It follows that a new solution needs to be devised to overcome the above drawbacks.

Disclosure of Invention

The disclosure provides a method and a device for allocating NR PDCCH (physical Downlink control channel) resources under spectrum sharing, which are used for solving the problem that the resources occupied by the NR PDCCH and the resources occupied by the LTE PDCCH are in allocation conflict with each other along with the dynamic adjustment of an NR system in a spectrum sharing mode.

The specific technical scheme provided by the embodiment of the disclosure is as follows:

in a first aspect, a method for allocating resources of a new air interface NR physical downlink control channel PDCCH under spectrum sharing includes:

determining a Coreset resource associated with an exclusive search space of an NR User Equipment (UE), wherein the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and lasting N symbols in a downlink time slot in a time domain, and does not conflict with a designated symbol, wherein N is a preset value, and the designated symbol comprises: a common control channel and a symbol occupied by a demodulation signal in an NR system and a long term evolution LTE system;

setting a target detection position of a target NR UE in a downlink time slot based on the detection capability of the target NR UE;

allocating, for the target NR UE, a resource occupied by an NR PDCCH based on the Coreset resource and the target detection position.

Optionally, before determining the Coreset resource associated with the NR UE-specific search space, further comprising:

configuring a Coreset resource associated with an NR UE-specific search space; alternatively, the first and second electrodes may be,

and obtaining the Coreset resource associated with the special search space of the NR UE configured by the high layer based on the high layer equipment notification.

Optionally, setting a target detection position of the target NR UE in a downlink timeslot based on a detection capability of the target NR UE, including:

determining each candidate detection position in a downlink time slot, wherein each candidate detection position is a transmission interval between symbols occupied by a common control channel and a demodulation signal in an NR system and an LTE system;

when the detection capability of the target NR UE is determined to reach a preset threshold, setting each candidate detection position as a target detection position of the target NR UE; alternatively, the first and second electrodes may be,

and when the detection capability of the target NR UE is determined not to reach a preset threshold, selecting one candidate detection position from the candidate detection positions to be set as the target detection position of the target NR UE.

Optionally, allocating, for the target NR UE, a resource occupied by an NR PDCCH based on the Coreset resource and the target detection location includes:

determining the minimum value of the NR downlink available bandwidth of the target NR UE in the Coreset resource based on the average number of Control Channel Elements (CCEs) occupied by the NR PDCCH allocated to each NR UE in a first designated historical period and the first continuous number of symbols of the corresponding first historical Coreset resource;

allocating, for the target NR UE, a resource occupied by an NR PDCCH based on the minimum value and the target detection position.

Optionally, allocating resources occupied by the NR PDCCH based on the minimum value and the target detection position includes:

if it is determined that the resource allocation failure times corresponding to the NR PDCCH for scheduling the uplink resources within a second specified historical period do not reach a set threshold, allocating resources occupied by the NR PDCCH for the target NR UE directly based on the minimum value and the target detection position;

if it is determined that the resource allocation failure times corresponding to the NR PDCCH for scheduling the uplink resource reach the set threshold within the second specified historical period, determining an increased number of PRBs based on a CCE increase step preset for the NR PDCCH for scheduling the uplink resource and a second persistent symbol number of the corresponding second historical Coreset resource, and allocating resources occupied by the NR PDCCH to the target NR UE based on the minimum value, the number of PRBs, and the target detection position.

In a second aspect, a method for detecting a new air interface NR physical downlink control channel NR PDCCH under spectrum sharing includes:

obtaining a control resource set Coreset resource configured by a network side, wherein the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and lasting N symbols in a downlink time slot in a time domain, and does not conflict with a designated symbol, wherein N is a preset value, and the designated symbol comprises: a common control channel and a symbol occupied by a demodulation signal in an NR system and a long term evolution LTE system;

acquiring target detection positions distributed by a network side;

and in a downlink time slot, performing blind detection on the NR PDCCH at the target detection position.

In a third aspect, an apparatus for allocating NR PDCCH resources under spectrum sharing includes:

a memory for storing executable instructions;

a processor for reading and executing the executable instructions stored in the memory, performing the following processes:

Optionally, before determining the NR UE-specific search space associated Coreset resource, the processor is further configured to:

Optionally, the processor is configured to set a target detection position of the target NR UE in a downlink timeslot based on a detection capability of the target NR UE, and to:

Optionally, the processor is configured to allocate, for the target NR UE, a resource occupied by an NR PDCCH based on the Coreset resource and the target detection location, and to:

Optionally, the processor is configured to allocate a resource occupied by the NR PDCCH based on the minimum value and the target detection position, and to:

In a fourth aspect, an apparatus for detecting a new air interface NR physical downlink control channel NR PDCCH under spectrum sharing includes:

a memory for storing executable instructions;

acquiring target detection positions distributed by a network side;

In a fifth aspect, an apparatus for allocating a PDCCH resource of a new NR physical downlink control channel under spectrum sharing includes:

a determining unit, configured to determine a Coreset resource associated with an NR user equipment UE-specific search space, where the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and N continuous symbols in a downlink timeslot in a time domain, and does not collide with a designated symbol, where N is a preset value, and the designated symbol includes: a common control channel and a symbol occupied by a demodulation signal in an NR system and a long term evolution LTE system;

a setting unit configured to set a target detection position of a target NR UE in a downlink slot based on a detection capability of the target NR UE;

an allocating unit, configured to allocate, for the target NR UE, a resource occupied by an NR PDCCH based on the Coreset resource and the target detection position.

In a sixth aspect, an apparatus for detecting a new air interface NR physical downlink control channel NR PDCCH under spectrum sharing includes:

a first obtaining unit, configured to obtain a Coreset resource configured on a network side, where the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and N continuous symbols in a downlink timeslot in a time domain, and does not collide with a designated symbol, where N is a preset value, and the designated symbol includes: a common control channel and a symbol occupied by a demodulation signal in an NR system and a long term evolution LTE system;

the second acquisition unit is used for acquiring a target detection position distributed by a network side;

and the detection unit is used for performing blind detection on the NR PDCCH at the target detection position in a downlink time slot.

In a seventh aspect, a computer-readable storage medium, wherein instructions, when executed by a processor, enable the processor to perform the method of any of the first aspect.

In an eighth aspect, a computer-readable storage medium, wherein instructions, when executed by a processor, enable the processor to perform the method of any of the second aspects.

In the embodiment of the disclosure, a network side allocates resources occupied by an NR PDCCH to a target NR UE at a corresponding target detection position in a downlink time slot based on detection capabilities of a Coreset resource and the target NR UE associated with an exclusive search space of the NR UE; the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and lasting N symbols in a downlink time slot in a time domain, and does not collide with a designated symbol, and the designated symbol includes: common control channels and symbols occupied by demodulation signals in the NR system and the LTE system; therefore, in a spectrum sharing mode, the network side can accurately allocate the resources occupied by the NR PDCCH to the target NR UE in a downlink time slot by adopting a dynamic adjustment mode, so that the probability of allocation conflict between the resources occupied by the NR PDCCH and the resources occupied by the LTE PDCCH is effectively reduced, and the spectrum utilization efficiency can be better improved.

Drawings

FIG. 1A is a diagram of a partially shared spectrum in the prior art;

FIG. 1B is a diagram illustrating a fully shared spectrum in the prior art;

fig. 2 is a schematic diagram of resources occupied by NR PDCCH allocated based on non-shared spectrum in the prior art;

fig. 3 is a schematic view of a resource flow occupied by NR PDCCH allocation under spectrum sharing in the embodiment of the present disclosure;

fig. 4 is a schematic diagram of time-frequency domain resource distribution in a spectrum sharing manner according to an embodiment of the disclosure;

fig. 5 is a schematic diagram illustrating a procedure of a Coreset resource blind detection NR PDCCH configured by an NR UE on a network side according to an embodiment of the present disclosure;

fig. 6 is a schematic diagram of a network device entity architecture according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a network device logic architecture according to an embodiment of the present disclosure;

FIG. 8 is a block diagram of a physical architecture of a computer device according to an embodiment of the present disclosure;

fig. 9 is a schematic diagram of a logic architecture of a computer device according to an embodiment of the present disclosure.

Detailed Description

In the prior art, referring to fig. 2, in a non-shared spectrum manner, an NR PDCCH is fixedly configured in the first 1-3 symbols of an NR system frequency band, and a network side configures a Control Resource Set (Coreset) Resource for a dedicated search space of an NR UE in an associated manner, where the Coreset Resource occupies 1-3 symbols in the NR system frequency band in a time domain and occupies the entire bandwidth or a part of the bandwidth of the NR system in a frequency domain.

The network side configures resources occupied by the NR PDCCH for each NR UE in the Coreset resources, and each NR UE needs to detect the NR PDCCH in the configured Coreset resources in a blind detection mode to obtain specific indication information.

However, in the spectrum sharing mode, resources occupied by the LTE PDCCH fixedly occupy 1-3 symbols of the full frequency band in each time slot, and then resources occupied by the NR PDCCH cannot be configured in the first 3 symbols in each time slot and cannot occupy the full bandwidth in the frequency domain, that is, the resources occupied by the NR PDCCH need to be dynamically adjusted on the available bandwidth.

In the dynamic adjustment of the NR system, the problem of resource allocation conflict between the resource occupied by the NR PDCCH and the resource occupied by the LTE PDCCH inevitably occurs.

In order to solve the above problem, in the embodiments of the present disclosure, a solution for NR PDCCH resource allocation under spectrum sharing is provided.

Preferred embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings.

In the embodiment of the present disclosure, in the pre-configuration stage, the network side needs to set Coreset resources associated with an exclusive search space for NR UE, as shown in fig. 3, the specific setting process is as follows:

step 300: and the network side configures the Coreset resources related to the NR UE-specific search space to occupy the full bandwidth on the frequency domain.

In a specific implementation, the full bandwidth may be greater than an actual occupied bandwidth of the NR system, and the modulation symbols in the Coreset resource employ a non-interleaved mapping mode on the bandwidth.

For example: referring to fig. 3, a Coreset resource associated with an NR UE-specific search space is configured for an LTE Cell Reference Signal (CRS) 4 port.

Taking a downlink timeslot as an example, the network side configures Coreset resources associated with an NR UE-specific search space on a whole bandwidth in a frequency domain, where the whole bandwidth includes an LTE downlink available bandwidth and an NR downlink available bandwidth.

Step 310: a network side configures a Coreset resource associated with an exclusive search space of an NR UE (radio network) into a Coreset resource which occupies non-first 3 symbols and lasts for N symbols in a downlink time slot in a time domain, wherein N is a preset value and does not conflict with a specified symbol, and the specified symbol comprises: common control channels and symbols occupied by demodulation signals in NR systems and LTE systems.

In a specific implementation, the value of N depends on a transmission interval between symbols occupied by the above-mentioned designated symbols. And, the common control channel and demodulation signal in the NR system and the LTE system include, but are not limited to, any one or any combination of the following: NR Tracking Reference Signal (TRS), NR demodulation Reference Signal (DMRS), LTE CRS, and other common channel transmitted signals.

For example: referring to fig. 4, the Coreset resource associated with the NR UE-specific search space is still configured for the LTE CRS4 port as an example.

Taking a downlink timeslot as an example, determining resources occupied by the LTE PDCCH in the LTE system according to a Control Format Indicator (CFI), that is, the resources occupied by the LTE PDCCH occupy the first 3 symbols in the time domain, and the resources occupied by the LTE CRS occupy

symbols

4, 7, 8, and 11 in the time domain; the resources occupied by the LTE CRS are spaced by 2 symbols in the time domain.

Then, the Coreset resource needs to avoid the first 3 symbols occupied by the resource occupied by the LTE PDCCH in the time domain, and avoid the

symbols

4, 7, 8, and 11 occupied by the resource occupied by the LTE CRS in the time domain.

Then, the network side configures the core resources associated with the NR UE-specific search space to occupy the full bandwidth in the frequency domain and last for 2 symbols in the time domain, i.e. N-2.

In a specific embodiment, Coreset resources may be distributed over a plurality of candidate detection locations, and the plurality of candidate detection locations may be distributed in the time domain among resources occupied by LTE CRS, and have a duration of 2 symbols.

As shown in fig. 4, in the embodiment of the present disclosure, the Coreset resource corresponds to three candidate detection positions in the time domain, and is divided into a starting position of symbol 5, a starting position of symbol 9, and a starting position of symbol 12, and lasts for 2 symbols.

Step 320: and the network side informs each NR UE of the configured Coreset resource.

In this way, each NR UE obtains a Coreset resource configured by the network side, and in the subsequent process, each NR UE may perform blind detection on the NR PDCCH at the target detection position notified by the network side according to the Coreset resource, thereby obtaining a specific instruction issued by the NR PDCCH.

Referring to fig. 4, in the embodiment of the present disclosure, a specific process for a network side to allocate resources occupied by an NR PDCCH to a target NR UE is as follows:

step 400: the network side determines the Coreset resources associated with the NR UE-specific search space.

In a specific implementation, the configuration manner of the time-frequency resource occupied by the Coreset resource is described in detail in steps 300 to 310, and is not described herein again.

Optionally, in steps 300 to 310, a process of setting Coreset resources by the network side is described, and the network side device performing this operation may be a base station, further, the setting process may also be completed by the higher layer device, and the higher layer device notifies the network side device, which is not described herein again.

Step 410: and the network side sets a target detection position of the target NR UE in a downlink time slot based on the detection capability of the target NR UE.

Specifically, after accessing the system, each NR UE reports its detection capability to the network side, where the detection capability of the NR UE may include, but is not limited to, the following parameters: the number of symbols spaced between two detections, and the number of symbols that last for one detection.

In a specific implementation, when step 410 is executed, the network side may first determine each candidate detection position in the downlink timeslot, and then set the target detection position of the target NR UE based on the detection capability of the target NR UE and each candidate detection position, where each candidate detection position is located at a transmission interval between symbols occupied by a common control channel and a demodulation signal in the NR system and the LTE system, so as to ensure that no collision occurs between Coreset resources and symbols occupied by the common control channel and the demodulation signal in the NR system and the LTE system, and effectively implement spectrum sharing.

Optionally, when the target detection position of the target NR UE is set based on the detection capability of the target NR UE and each candidate detection position, the network side may adopt, but is not limited to, the following two ways:

mode 1: and when the network side determines that the detection capability of the target NR UE reaches a preset threshold, setting all the candidate detection positions as the target detection positions of the target NR UE.

For example, referring to fig. 4, the Coreset resource associated with the NR UE-specific search space is still configured for the LTE CRS4 port.

Assuming that the detection capability of the target NR UE reaches the preset threshold, as shown in fig. 4, taking a downlink timeslot as an example, there are three candidate detection positions, which respectively take symbol 5, symbol 9, and symbol 12 as starting positions, and the network side will set the three candidate detection positions as the target detection positions of the target NR UE.

Mode 2: and when the network side determines that the detection capability of the target NR UE does not reach a preset threshold, selecting one candidate detection position from all candidate detection positions to be set as the target detection position of the target NR UE.

Assuming that the detection capability of the target NR UE does not reach the preset threshold, as shown in fig. 4, taking a downlink timeslot as an example, there are three candidate detection positions, where a symbol 5, a symbol 9, and a symbol 12 are start positions, respectively, then the network side selects one candidate detection position from the candidate detection positions to be set as the target detection position of the target NR UE, where optionally, the network side selects the candidate detection position with the least number of historical selections as the target detection position of the target NR UE, so that it may be ensured that each target NR UE is uniformly distributed at each candidate detection position.

As shown in fig. 4, it is assumed that the system has three target NR UEs, target NR UE1, target NR UE2 and target NR UE3, and assuming that there are three candidate detection positions, respectively, the candidate detection position 1 (starting position at symbol 5), the candidate detection position 2 (starting position at symbol 9), and the candidate detection position 3 (starting position at symbol 12), and the respective history is selected for the number of times of 0, then, because the historical selection times of each candidate detection position are the least, the network side can evenly distribute each target NR UE on each candidate detection position, for example, the network side sets the detection position candidate 1 as the target detection position of the target NR UE1, the network side sets the detection position candidate 2 as the target detection position of the target NR UE2, and the network side sets the detection position candidate 3 as the target detection position of the target NR UE 3.

Step 420: and the network side allocates resources occupied by the NR PDCCH for the target NR UE based on the Coreset resources and the target detection position.

In this embodiment of the present disclosure, in a specific implementation, when step 420 is executed, the network side may determine, based on an average Control Channel Element (CCE) number Z included in resources occupied by the NR PDCCH allocated to each NR UE in a first specified history period and a first persistent symbol number Y1 of a corresponding first history Coreset resource, a minimum value of an NR downlink available bandwidth of the target NR UE in the Coreset resource, and allocate, based on the minimum value and the target detection position, the resources occupied by the NR PDCCH to the target NR UE.

For example, taking one downlink timeslot as an example, assuming that, in a first specified history period, the average number of CCEs included in resources occupied by NR PDCCHs allocated by the network side for each NR UE is 4, and the number of persistent symbols of a first historical Coreset Resource used in the first specified history period is 2, the minimum value of NR downlink available bandwidth in Coreset resources determined by the network side for the target NR UE is Ceil (Z6/Y1) ═ 4 × 6/2 ═ 12 Physical Resource Blocks (PRBs).

Then, referring to fig. 4, assuming that one target detection position obtained by the target NR UE takes symbol 5 as an initial position, the network side allocates resources occupied by the NR PDCCH to the target NR UE based on 12 PRBs occupied on the frequency domain within the time domain range of symbol 5 and symbol 6 according to the duration of Coreset resources of 2 symbols.

Further, in the embodiment of the present disclosure, when the network side allocates the resource occupied by the NR PDCCH based on the minimum value and the target detection position, the following two methods are included, but not limited to:

the method a: and if the network side determines that the resource allocation failure times corresponding to the NR PDCCH for scheduling the uplink resources in the second specified historical period do not reach a set threshold, allocating the resources occupied by the NR PDCCH for the target NR UE directly based on the minimum value and the target detection position.

Mode b: if the network side determines that the resource allocation failure times corresponding to the NR PDCCH used for scheduling the uplink resource reach the set threshold value in the second specified historical period, the network side further determines the number of the added PRBs based on a CCE number X contained in a CCE increase step preset by the NR PDCCH used for scheduling the uplink resource and a second persistent symbol number Y2 of the corresponding second historical Coreset resource, and allocates the resources occupied by the NR PDCCH for the target NR UE based on the minimum value, the number of the PRBs and the target detection position.

For example, still taking one downlink timeslot as an example, assuming that, in a second specified history period, the number of resource allocation failures corresponding to the NR PDCCH for scheduling the uplink resource reaches a set threshold, the number of CCEs included in a CCE increasing step preset by the NR PDCCH for scheduling the uplink resource is 1, and the number of persistent symbols of the corresponding second historical Coreset resource is 2, the network side determines that the number of PRBs that need to be increased is Ceil (X6/Y2) ═ 1 × 6/2 — 3, that is, the NR downlink available bandwidth is: 12+3 15 PRBs.

Then, referring to fig. 4, assuming that three target detection positions obtained by a target NR UE respectively start at symbol 5, symbol 9, and symbol 12, the network side allocates resources occupied by the NR PDCCH to the target NR UE based on 15 PRBs occupied on the frequency domain within the time domain ranges of symbol 5 and symbol 6, symbol 9 and symbol 10, and symbol 12 and symbol 13 according to the duration of Coreset resources of 2 symbols.

Optionally, the first specified historical period and the second specified historical period may be the same time period or different time periods, and the first historical Coreset resource and the second historical Coreset resource may be the same or different, and are not described herein again.

Based on the above embodiments, referring to fig. 5, a detailed procedure for detecting and obtaining resources occupied by the NR PDCCH configured under spectrum sharing by the NR UE based on the network side notification is as follows:

step 500: the target NR UE obtains Coreset resources configured on the network side.

Optionally, the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and N continuous symbols in a downlink timeslot in a time domain, and does not collide with a designated symbol; wherein, the N is a preset value, and the designated symbol includes: common control channels and symbols occupied by demodulation signals in NR systems and LTE systems.

The configuration of Coreset resources is described in steps 300-320, and will not be described herein.

Step 510: and the target NR UE acquires a target detection position distributed by the network side.

Optionally, the target detection position is allocated by the network side based on the detection capability of the target NR UE, and a specific implementation has been introduced in step 410, which is not described herein again.

Step 520: and the target NR UE performs blind detection on the NR PDCCH at the target detection position in a downlink time slot.

Based on the same inventive concept, referring to fig. 6, a network device (e.g., a base station) in an embodiment of the present disclosure at least includes:

a memory 601 for storing executable instructions;

a processor 602, configured to read and execute the executable instructions stored in the memory 601, and perform the following processes:

determining a Coreset resource associated with an NR UE (radio network equipment) specific search space, wherein the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and lasting N symbols in a downlink time slot in a time domain, and does not conflict with a designated symbol, wherein N is a preset value, and the designated symbol comprises: a common control channel and a symbol occupied by a demodulation signal in an NR system and a long term evolution LTE system;

Where, as shown in FIG. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 602, and various circuits of memory, represented by memory 601, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 602 is responsible for managing the bus architecture and general processing, and the memory 601 may store data used by the processor 602 in performing operations.

Optionally, before determining the NR UE-specific search space associated Coreset resources, the processor 602 is further configured to:

Optionally, the processor 602 is configured to set a target detection position of a target NR UE in a downlink time slot based on a detection capability of the target NR UE:

Optionally, based on the Coreset resource and the target detection position, allocating, for the target NR UE, a resource occupied by an NR PDCCH, where the processor 602 is configured to:

Optionally, based on the minimum value and the target detection position, allocating a resource occupied by the NR PDCCH, where the processor 602 is configured to:

Based on the same inventive concept, referring to fig. 7, the disclosed embodiment provides a network device (e.g., a base station) including at least a determining unit 701, a setting unit 702, and an allocating unit 703, wherein,

a determining unit 701, configured to determine a Coreset resource associated with an NR UE-specific search space, where the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and N continuous symbols in a downlink timeslot in a time domain, and does not collide with a designated symbol, where N is a preset value, and the designated symbol includes: common control channels and symbols occupied by demodulation signals in the NR system and the LTE system;

a setting unit 702 configured to set a target detection position of a target NR UE in a downlink slot based on a detection capability of the target NR UE;

an allocating unit 703 is configured to allocate, for the target NR UE, a resource occupied by an NR PDCCH based on the Coreset resource and the target detection position.

In the embodiment of the present disclosure, the determining unit 701, the setting unit 702, and the allocating unit 703 are mutually matched to implement any method executed by the network side in the foregoing embodiments.

Based on the same inventive concept, referring to fig. 8, an embodiment of the present disclosure provides a computer device (e.g., NR UE) including at least:

a memory 801 for storing executable instructions;

the processor 802, which is used to read the program in the memory 801, executes the following processes:

obtaining a Coreset resource configured at a network side, wherein the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and lasting N symbols in a downlink time slot in a time domain, and does not collide with a designated symbol, wherein N is a preset value, and the designated symbol includes: common control channels and symbols occupied by demodulation signals in the NR system and the LTE system;

acquiring target detection positions distributed by a network side;

Where, as shown in FIG. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 802 and various circuits of memory represented by memory 801 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 802 is responsible for managing the bus architecture and general processing, and the memory 801 may store data used by the processor 802 in performing operations.

Based on the same inventive concept, referring to fig. 9, an embodiment of the present disclosure provides a computer device (e.g., NR UE) including at least a first obtaining unit 901, a second obtaining unit 902, and a detecting unit 903, wherein,

a first obtaining unit 901, configured to obtain a Coreset resource configured on a network side, where the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and N continuous symbols in a downlink timeslot in a time domain, and does not collide with a specified symbol, where N is a preset value, and the specified symbol includes: common control channels and symbols occupied by demodulation signals in the NR system and the LTE system;

a second obtaining unit 902, configured to obtain a target detection position allocated by a network side;

a detecting unit 903, configured to perform blind detection on the NR PDCCH at the target detection position in a downlink timeslot.

In the embodiment of the present disclosure, the first obtaining unit 901, the second obtaining unit 902, and the detecting unit 903 cooperate with each other to implement any method executed by the NR UE in the foregoing embodiments.

Based on the same inventive concept, the embodiments of the present disclosure provide a computer-readable storage medium, and when instructions in the computer-readable storage medium are executed by a processor, the processor is enabled to execute any one of the methods executed by the network side in the foregoing embodiments.

Based on the same inventive concept, the embodiments of the present disclosure provide a computer-readable storage medium, and when executed by a processor, enable the processor to perform any one of the methods performed by the NE UE in the above embodiments.

In summary, in the embodiment of the present disclosure, a network side allocates, at a corresponding target detection position in a downlink timeslot, a resource occupied by an NR PDCCH to a target NR UE based on detection capabilities of a Coreset resource and the target NR UE associated with an dedicated search space of the NR UE; the Coreset resource occupies a full bandwidth in a frequency domain, occupies non-first 3 symbols and lasting N symbols in a downlink time slot in a time domain, and does not collide with a designated symbol, and the designated symbol includes: common control channels and symbols occupied by demodulation signals in the NR system and the LTE system; therefore, in a spectrum sharing mode, the network side can accurately allocate the resources occupied by the NR PDCCH to the target NR UE in a downlink time slot by adopting a dynamic adjustment mode, so that the probability of allocation conflict between the resources occupied by the NR PDCCH and the resources occupied by the LTE PDCCH is effectively reduced, and the spectrum utilization efficiency can be better improved.

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

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

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

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

While preferred embodiments of the present disclosure have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the disclosure.

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

Claims

1. A method for allocating PDCCH (physical Downlink control channel) resources of a new air interface NR (NR) under spectrum sharing is characterized by comprising the following steps:

2. The method of claim 1, prior to determining the NR UE-specific search space associated Coreset resource, further comprising:

3. The method of claim 1, wherein setting a target detection position of a target NR UE in a downlink slot based on a detection capability of the target NR UE comprises:

4. The method of claim 1, 2 or 3, wherein allocating resources occupied by the NR PDCCH for the target NR UE based on the Coreset resources and the target detection position comprises:

5. The method of claim 4, wherein allocating resources occupied by the NR PDCCH based on the minimum value and the target detection position comprises:

6. A method for detecting a new air interface NR physical downlink control channel NR PDCCH under spectrum sharing is characterized by comprising the following steps:

acquiring target detection positions distributed by a network side;

7. An apparatus for allocating NR PDCCH resources under spectrum sharing, comprising:

a memory for storing executable instructions;

8. The apparatus of claim 7, wherein prior to determining NR UE-specific search space associated Coreset resources, the processor is further for:

9. The apparatus of claim 7, wherein a target detection position of a target NR UE is set in a downlink slot based on a detection capability of the target NR UE, the processor to:

10. The apparatus of claim 7, 8 or 9, wherein resources occupied by NR PDCCH are allocated for the target NR UE based on the Coreset resources and the target detection position, the processor being configured to:

11. The apparatus of claim 10, wherein resources occupied by NR PDCCH are allocated based on the minimum value and the target detection position, the processor being configured to:

12. A device for detecting a new air interface NR physical downlink control channel NR PDCCH under spectrum sharing is characterized by comprising:

a memory for storing executable instructions;

acquiring target detection positions distributed by a network side;

13. A new air interface NR physical downlink control channel PDCCH resource allocation device under spectrum sharing is characterized by comprising:

14. A device for detecting a new air interface NR physical downlink control channel NR PDCCH under spectrum sharing is characterized by comprising:

15. A computer-readable storage medium, wherein instructions in the computer-readable storage medium, when executed by a processor, enable the processor to perform the method of any of claims 1-5.

16. A computer-readable storage medium, wherein instructions in the computer-readable storage medium, when executed by a processor, enable the processor to perform the method of claim 6.