WO2022048199A1 - Nr pdcch resource allocation method and apparatus under spectrum sharing - Google Patents

Abstract

Disclosed are an NR PDCCH resource allocation method and apparatus under spectrum sharing, which are used for solving the problem of a resource conflict. The method comprises: a network side configuring a Coreset resource associated with an NR UE-specific search space to occupy the full bandwidth in a frequency domain, to occupy, in a time domain, any consecutive N symbols excluding the first three symbols in a downlink slot, and not to conflict with specified symbols, wherein the specified symbols include symbols occupied by common control channels and demodulation signals in an NR system and an LTE system. In this way, by means of sharing a spectrum, a network side can accurately allocate, in a downlink slot and by means of dynamic adjustment, a resource, which is occupied by an NR PDCCH, to a target NR UE, thereby effectively reducing the probability of an allocation conflict occurring between the resource occupied by the NR PDCCH and a resource occupied by an LTE PDCCH, and also better improving the spectrum utilization efficiency.

Description

NR PDCCH resource allocation method and device under spectrum sharing

CROSS-REFERENCE TO RELATED APPLICATIONS

This disclosure claims the priority of the Chinese patent application with the application number 202010905364.X and the application title "NR PDCCH resource allocation method and device under spectrum sharing" submitted to the Chinese Patent Office on September 1, 2020, the entire content of which is approved by References are incorporated in this disclosure.

technical field

The present disclosure relates to the field of communication technologies, and in particular, to a method and apparatus for NR PDCCH resource allocation under spectrum sharing.

Background technique

The existing wireless communication system involves a Long Term Evolution (Long Term Evolution, LTE) system and a fifth generation (5th Generation, 5G) New Radio (New Radio, NR) system. With the development of wireless communication technology, there have been problems such as shortage of spectrum resources, low utilization rate of spectrum resources, and serious spectrum fragmentation. The emergence of carrier aggregation technology and dynamic spectrum sharing technology has brought dawn to the efficient use of spectrum.

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

1) Partially share spectrum mode.

Referring to Fig. 1A, when the partial spectrum sharing mode is adopted, the maximum available bandwidth of the NR system is greater than the maximum available bandwidth of the LTE system, and the time-frequency resources used by the NR PDCCH are configured in the NR system that is available but does not overlap with the LTE system. on the bandwidth.

2) Completely share spectrum mode.

Referring to Figure 1B, when the fully shared spectrum mode is adopted, the maximum available bandwidths of the NR system and the LTE system are the same, for example, the maximum available bandwidth of the NR system and the LTE system are both 20MHz; in the fully shared spectrum mode, the LTE PDCCH is fixed The frequency domain resources of the full frequency band are occupied, and the time-frequency resources occupied by the NR PDCCH need to be dynamically configured accordingly.

Then in the completely shared spectrum mode, how to avoid the dynamic configuration of NR PDCCH without affecting the LTE PDCCH, there is no effective solution for the time-frequency resource allocation of NR PDCCH in the prior art.

It can be seen that a new solution needs to be designed to overcome the above-mentioned defects.

SUMMARY OF THE INVENTION

The present disclosure provides an NR PDCCH resource allocation method and device under spectrum sharing, to solve the problem of allocation conflict between the resources occupied by the NR PDCCH and the resources occupied by the LTE PDCCH with the dynamic adjustment of the NR system in the shared spectrum mode.

The specific technical solutions provided by the embodiments of the present disclosure are as follows:

A first aspect provides a method for allocating PDCCH resources for a new air interface NR physical downlink control channel under spectrum sharing, including:

determining a control resource set Coreset resource associated with the NR user equipment UE-specific search space, the Coreset resource occupying the full bandwidth in the frequency domain, and occupying the non-first 3 symbols in the downlink time slot in the time domain for N symbols, and Does not conflict with a designated symbol, wherein the N is a preset value, and the designated symbol includes: symbols occupied by common control channels and demodulation signals in the NR system and the long-term evolution LTE system;

Based on the detection capability of the target NR UE, the target detection position of the target NR UE is set in the downlink time slot;

Based on the Coreset resources and the target detection position, resources occupied by the NR PDCCH are allocated to the target NR UE.

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

Configure the Coreset resource associated with the NR UE-specific search space; or,

Based on the notification of the high-level device, obtain the Coreset resources associated with the NR UE-specific search space configured by the high-level.

Optionally, based on the detection capability of the target NR UE, the target detection position of the target NR UE is set in the downlink time slot, including:

In the downlink time slot, determine each candidate detection position, and each candidate detection position is located in the transmission interval between the symbols occupied by the common control channel and the demodulated signal in the NR system and the LTE system;

When it is determined that the detection capability of the target NR UE reaches a preset threshold, each candidate detection position is set as the target detection position of the target NR UE; or,

When it is determined that the detection capability of the target NR UE does not reach the preset threshold, in each candidate detection position, a candidate detection position is selected and set as the target detection position of the target NR UE.

Optionally, based on the Coreset resources and the target detection position, allocate resources occupied by the NR PDCCH for the target NR UE, including:

Determine the target NR UE based on the resources occupied by the NR PDCCH allocated to each NR UE, the average number of CCEs contained in the control channel element, and the number of first persistent symbols of the corresponding first historical Coreset resources within the first specified historical period The minimum value of the NR downlink available bandwidth in the Coreset resource;

Based on the minimum value and the target detection position, resources occupied by the NR PDCCH are allocated to the target NR UE.

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

If it is determined that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources does not reach the set threshold within the second specified historical period, directly based on the minimum value and the target detection position, the target NR UE is Allocate resources occupied by NR PDCCH;

If it is determined that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources reaches the set threshold within the second specified historical period, the step size is further increased based on the preset CCE corresponding to the NR PDCCH used for scheduling uplink resources, and The second continuous symbol number of the corresponding second historical Coreset resource, determine the number of PRBs to increase, and then based on the minimum value, the number of PRBs and the target detection position, allocate the resources occupied by the NR PDCCH for the target NR UE .

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

Obtain the control resource set Coreset resource configured on the network side, the Coreset resource occupies the full bandwidth in the frequency domain, occupies the non-first 3 symbols in the downlink time slot in the time domain and lasts for N symbols, and does not conflict with the designated symbol , wherein the N is a preset value, and the designated symbols include: symbols occupied by the common control channel and demodulation signals in the NR system and the Long Term Evolution LTE system;

Obtain the target detection position assigned by the network side;

In the downlink time slot, blind detection is performed on the NR PDCCH at the target detection position.

In a third aspect, an apparatus for NR PDCCH resource allocation under spectrum sharing, comprising:

memory for storing executable instructions;

A processor for reading and executing executable instructions stored in memory to perform the following processes:

determining a control resource set Coreset resource associated with the NR user equipment UE-specific search space, the Coreset resource occupying the full bandwidth in the frequency domain, and occupying the non-first 3 symbols in the downlink time slot in the time domain for N symbols, and Does not conflict with a designated symbol, wherein the N is a preset value, and the designated symbol includes: symbols occupied by common control channels and demodulation signals in the NR system and the long-term evolution LTE system;

Based on the detection capability of the target NR UE, the target detection position of the target NR UE is set in the downlink time slot;

Based on the Coreset resources and the target detection position, resources occupied by the NR PDCCH are allocated to the target NR UE.

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

Configure the Coreset resource associated with the NR UE-specific search space; or,

Based on the notification of the high-level device, obtain the Coreset resources associated with the NR UE-specific search space configured by the high-level.

Optionally, based on the detection capability of the target NR UE, the target detection position of the target NR UE is set in the downlink time slot, and the processor is used for:

In the downlink time slot, determine each candidate detection position, and each candidate detection position is located in the transmission interval between the symbols occupied by the common control channel and the demodulated signal in the NR system and the LTE system;

When it is determined that the detection capability of the target NR UE reaches a preset threshold, each candidate detection position is set as the target detection position of the target NR UE; or,

When it is determined that the detection capability of the target NR UE does not reach the preset threshold, in each candidate detection position, a candidate detection position is selected and set as the target detection position of the target NR UE.

Optionally, based on the Coreset resource and the target detection position, allocate resources occupied by the NR PDCCH for the target NR UE, and the processor is used for:

Determine the target NR UE based on the resources occupied by the NR PDCCH allocated to each NR UE, the average number of CCEs contained in the control channel element, and the number of first persistent symbols of the corresponding first historical Coreset resources within the first specified historical period The minimum value of the NR downlink available bandwidth in the Coreset resource;

Based on the minimum value and the target detection position, resources occupied by the NR PDCCH are allocated to the target NR UE.

Optionally, based on the minimum value and the target detection position, allocate resources occupied by the NR PDCCH, and the processor is used for:

If it is determined that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources does not reach the set threshold within the second specified historical period, directly based on the minimum value and the target detection position, the target NR UE is Allocate resources occupied by NR PDCCH;

If it is determined that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources reaches the set threshold within the second specified historical period, the step size is further increased based on the preset CCE corresponding to the NR PDCCH used for scheduling uplink resources, and The second continuous symbol number of the corresponding second historical Coreset resource, determine the number of PRBs to increase, and then based on the minimum value, the number of PRBs and the target detection position, allocate the resources occupied by the NR PDCCH for the target NR UE .

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

memory for storing executable instructions;

A processor for reading and executing executable instructions stored in memory to perform the following processes:

Obtain the control resource set Coreset resource configured on the network side, the Coreset resource occupies the full bandwidth in the frequency domain, occupies the non-first 3 symbols in the downlink time slot in the time domain and lasts for N symbols, and does not conflict with the designated symbol , wherein the N is a preset value, and the designated symbols include: symbols occupied by the common control channel and demodulation signals in the NR system and the Long Term Evolution LTE system;

Obtain the target detection position assigned by the network side;

In the downlink time slot, blind detection is performed on the NR PDCCH at the target detection position.

A fifth aspect, a new air interface NR physical downlink control channel PDCCH resource allocation device under spectrum sharing, comprising:

The determining unit is used to determine the Coreset resource of the control resource set associated with the dedicated search space of the NR user equipment UE, the Coreset resource occupies the full bandwidth in the frequency domain, and occupies the non-first 3 symbols in the downlink time slot in the time domain and continues N symbols, which do not conflict with designated symbols, where N is a preset value, and the designated symbols include: symbols occupied by common control channels and demodulation signals in the NR system and the Long Term Evolution LTE system;

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

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

A sixth aspect, a device for detecting a new air interface NR physical downlink control channel PDCCH under spectrum sharing, comprising:

The first obtaining unit is used to obtain the coreset resource of the control resource set configured by the network side, the coreset resource occupies the full bandwidth in the frequency domain, and occupies the non-first 3 symbols in the downlink time slot in the time domain and lasts for N symbols , and does not conflict with the designated symbol, wherein the N is a preset value, and the designated symbol includes: the symbols occupied by the common control channel and the demodulation signal in the NR system and the Long Term Evolution LTE system;

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

A detection unit, configured to perform blind detection on the NR PDCCH at the target detection position in the downlink time slot.

In a seventh aspect, a computer-readable storage medium, when the instructions in the computer-readable storage medium are executed by a processor, enable the processor to perform the method according to any one of the above-mentioned first aspects.

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

In the embodiment of the present disclosure, the network side allocates resources occupied by the NR PDCCH to the target NR UE at the corresponding target detection position in the downlink time slot based on the Coreset resources associated with the dedicated search space of the NR UE and the detection capability of the target NR UE; The coreset resources occupy the full bandwidth in the frequency domain, occupy the non-first 3 symbols in the downlink time slot in the time domain and last for N symbols, and do not conflict with the designated symbols, the designated symbols include: NR system and LTE system In this way, in the shared spectrum mode, the network side can accurately allocate the resources occupied by the NR PDCCH to the target NR UE by dynamic adjustment in the downlink time slot, so as to effectively The probability of allocation conflict between the resources occupied by the NR PDCCH and the resources occupied by the LTE PDCCH is reduced, and the efficiency of spectrum use can also be better improved.

Description of drawings

1A is a schematic diagram of a part of a shared spectrum under the prior art;

1B is a schematic diagram of a fully shared spectrum under the prior art;

2 is a schematic diagram of resources occupied by allocating NR PDCCH based on a non-shared spectrum mode under the prior art;

3 is a schematic diagram of the resource flow of allocating NR PDCCH occupied resources under spectrum sharing in an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of resource distribution in the time-frequency domain in a shared spectrum mode according to an embodiment of the present disclosure;

FIG. 5 is a schematic flowchart of the blind detection of the NR PDCCH based on the Coreset resource configured by the NR UE based on the network side in the embodiment of the disclosure;

FIG. 6 is a schematic diagram of an entity architecture of a network device in an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a logical architecture of a network device in an embodiment of the present disclosure;

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

FIG. 9 is a schematic diagram of a logical architecture of a computer device according to an embodiment of the disclosure.

detailed description

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

The network side will configure the 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 by blind detection to obtain specific indication information.

However, in the shared spectrum mode, the resources occupied by LTE PDCCH fixedly occupy 1-3 symbols of the full frequency band in each time slot, so the resources occupied by NR PDCCH cannot be configured in the first 3 symbols in each time slot, In addition, the full bandwidth cannot be occupied 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, it is inevitable that the resources occupied by the NR PDCCH conflict with the allocation of the resources occupied by the LTE PDCCH.

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.

The preferred embodiments of the present disclosure will be further described in 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 the Coreset resource associated with the exclusive search space for the NR UE, and the specific setting process is as follows:

Step 1: The network side configures the Coreset resources associated with the NR UE-specific search space to occupy the full bandwidth in the frequency domain.

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

For example, referring to FIG. 4 , it is taken as an example to configure the Coreset resource associated with the NR UE-specific search space for the LTE cell reference signal (Cell Reference Signal, CRS) 4 port.

Taking a downlink time slot as an example, the network side will configure the Coreset resource associated with the NR UE-specific search space on the entire bandwidth in the frequency domain, where the entire bandwidth includes the LTE downlink available bandwidth and the NR downlink available bandwidth.

Step 2: The network side configures the Coreset resource associated with the NR UE-specific search space to occupy the non-first 3 symbols in the downlink time slot in the time domain and last for N symbols, and does not conflict with the specified symbol, wherein the N is a preset value, and the designated symbols include: symbols occupied by common control channels and demodulated signals in the NR system and the LTE system.

In a specific implementation, the value of N depends on the transmission interval between the 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 not limited to any one or any combination of the following: NR tracking reference signal (Tracking Reference Signal, TRS), NR demodulation reference signal (Demodulatin Reference Signal, DMRS), LTE CRS, and other signals transmitted on common channels.

For example, referring to FIG. 4, it is still an example of configuring the Coreset resource associated with the NR UE-specific search space for the LTE CRS4 port.

Taking a downlink time slot as an example, the LTE system determines the resources occupied by the LTE PDCCH according to the Control Format Indicator (CFI), that is, the resources occupied by the LTE PDCCH occupy the first three symbols in the time domain, and the resources occupied by the LTE CRS. The resources occupy symbol 4, symbol 7, symbol 8, and symbol 11 in the time domain; wherein, the resources occupied by the LTE CRS are separated by 2 symbols in the time domain.

Then, the Coreset resource needs to avoid the first 3 symbols occupied in the time domain by the resources occupied by the LTE PDCCH, and the symbols 4, 7, 8, and 11 occupied by the resources occupied by the LTE CRS in the time domain. .

Then, the network side configures the Coreset resource 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, that is, N=2.

In a specific embodiment, the Coreset resources may be distributed in multiple candidate detection positions, and the multiple candidate detection positions are distributed among the resources occupied by the LTE CRS in the time domain, and the duration is 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, respectively starting with symbol 5, symbol 9, and symbol 12 and lasting two symbols.

Step 3: The network side notifies each NR UE of the configured Coreset resources.

In this way, each NR UE obtains the Coreset resources configured by the network side. In the subsequent process, each NR UE can blindly detect the NR PDCCH at the target detection position notified by the network side according to the Coreset resources, thereby obtaining NR The specific command issued by the PDCCH.

Referring to FIG. 3 , in the embodiment of the present disclosure, the specific process for the network side to allocate resources occupied by the NR PDCCH to the target NR UE is as follows:

Step 300: The network side determines Coreset resources associated with the NR UE-specific search space.

In the specific implementation, the configuration manner of the time-frequency resources occupied by the Coreset resources has been described in detail in steps 1 to 2, and will not be repeated here.

Optionally, in the above steps 1-2, the process of setting Coreset resources by the network side is introduced, and the network side device that performs this operation can be a base station. Further, the above setting process can also be set by high-level equipment. Complete, And the high-level equipment notifies the network side equipment, which will not be repeated here.

Step 310: The network side sets the target detection position of the target NR UE in the downlink time slot based on the detection capability of the target NR UE.

Specifically, each NR UE will report its detection capability to the network side after accessing the system. The so-called detection capability of an NR UE may include, but is not limited to, the following parameters: the number of symbols in the interval between two detections, and the detection capability of one detection. The number of symbols to last.

In a specific implementation, when performing step 310, the network side may first determine each candidate detection position in the downlink time slot, 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 position, wherein each candidate detection position is located in the transmission interval between the common control channel in the NR system and the LTE system and the symbol occupied by the demodulated signal, so as to ensure that the Coreset resources and the common control channel in the above-mentioned NR system and the LTE system are guaranteed. The symbols occupied by the channel and the demodulated signal do not collide, effectively realizing spectrum sharing.

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

Mode 1: When the network side determines that the detection capability of the target NR UE reaches a preset threshold, each candidate detection position is set as the target detection position of the target NR UE.

For example, referring to FIG. 4, it is still an example of configuring the Coreset resource associated with the NR UE-specific search space for the LTE CRS 4 port.

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

Mode 2: When the network side determines that the detection capability of the target NR UE does not reach the preset threshold, among each candidate detection position, select a candidate detection position and set it as the target detection position of the target NR UE.

For example, referring to FIG. 4, it is still an example of configuring the Coreset resource associated with the NR UE-specific search space for the LTE CRS 4 port.

Assuming that the detection capability of the target NR UE does not reach the preset threshold, then, as shown in Figure 4, taking a downlink time slot as an example, there are three candidate detection positions, starting with symbol 5, symbol 9 and symbol 12 respectively position, then, the network side will select a candidate detection position from it and set it as the target detection position of the target NR UE, wherein, optionally, the network side will select the candidate detection position with the least number of times selected as the target NR UE In this way, it can be ensured that each target NR UE is evenly distributed in each candidate detection position.

As shown in Figure 4, it is assumed that there are three target NR UEs in the system, namely target NR UE1, target NR UE2 and target NR UE3, and there are three candidate detection positions, which are candidate detection position 1 (starting from symbol 5) starting position), candidate detection position 2 (with symbol 9 as the starting position) and candidate detection position 3 (with symbol 12 as the starting position), and their respective historical selection times are all 0, then, since each candidate detection position The number of historical selections is the least, and the network side can evenly distribute each target NR UE on each candidate detection position. For example, the network side sets the candidate detection position 1 as the target detection position of the target NR UE1, and the network side sets the candidate detection position The detection position 2 is set as the target detection position of the target NR UE2, and the network side sets the candidate detection position 3 as the target detection position of the target NR UE3.

Step 320: 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 the embodiment of the present disclosure, in the specific implementation, when step 320 is executed, the network side will, based on the resources occupied by the NR PDCCH allocated by each NR UE in the first specified historical period, include the average Control Channel Element (Control Channel Element, The number Z of CCEs, and the first number of continuous symbols Y1 of the corresponding first historical Coreset resources, determine the minimum value of the NR downlink available bandwidth of the target NR UE in the Coreset resources, and based on the minimum value and the The target detection position is allocated, and resources occupied by the NR PDCCH are allocated to the target NR UE.

For example, taking a downlink time slot as an example, it is assumed that in the first specified historical period, the resources occupied by the NR PDCCH allocated by the network side for each NR UE contain 4 CCEs on average, and within the first specified historical period The number of continuous symbols of the first historical Coreset resource used is 2, then the minimum value of the NR downlink available bandwidth in the Coreset resource determined by the network side for the target NR UE is Ceil(Z*6/Y1)=4*6 /2=12 physical resource blocks (Physical Resource Block, PRB).

Then, referring to FIG. 4 , assuming that a target detection position obtained by the target NR UE starts with symbol 5, the network side is 2 symbols according to the duration of the Coreset resource, within the time domain range of symbol 5 and symbol 6 , based on the 12 PRBs occupied in the frequency domain, allocate resources occupied by the NR PDCCH to the target NR UE.

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

Mode a: If the network side determines that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources within the second specified historical period does not reach the set threshold, it directly based on the minimum value and the target detection position, for The target NR UE allocates resources occupied by the NR PDCCH.

Mode b: If the network side determines that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources has reached the set threshold within the second specified historical period, it is further based on the preset CCE corresponding to the NR PDCCH used for scheduling uplink resources. Increase the number of CCEs X included in the step size, and the number of second persistent symbols Y2 of the corresponding second historical Coreset resource, determine the number of PRBs to increase, and then based on the minimum value and the number of PRBs and the target detection position, for The target NR UE allocates resources occupied by the NR PDCCH.

For example, still taking a downlink time slot as an example, it is assumed that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources reaches the set threshold, and the NR PDCCH corresponding to scheduling uplink resources presets The number of CCEs included in the CCE increase step is 1, and the number of persistent symbols of the corresponding second historical Coreset resource is 2, then the network side determines that the number of PRBs to be added is Ceil(X*6/Y2)=1*6 /2=3, that is, the NR downlink available width is: 12+3=15 PRBs.

Then, referring to Fig. 4, it is assumed that the three target detection positions obtained by the target NR UE respectively start with symbol 5, symbol 9 and symbol 12, then the network side is 2 symbols according to the duration of the Coreset resource, at symbol 5 In the time domain range of symbol 6, symbol 9 and symbol 10, symbol 12 and symbol 13, based on the 15 PRBs occupied in the frequency domain, the target NR UE is allocated resources occupied by the NR PDCCH.

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. are not the same, and will not be repeated here.

Based on the above-mentioned embodiment, referring to FIG. 5 , the detailed process of the NR UE detecting and obtaining the resources occupied by the NR PDCCH configured under the spectrum sharing based on the notification from the network side is as follows:

Step 500: The target NR UE obtains the Coreset resources configured by the network side.

Optionally, the Coreset resource occupies the full bandwidth in the frequency domain, occupies the non-first 3 symbols in the downlink time slot in the time domain and lasts for N symbols, and does not conflict with the designated symbol; wherein, the N is As a preset value, the designated symbols include: symbols occupied by common control channels and demodulation signals in the NR system and the LTE system.

The configuration method of the Coreset resource has been introduced in steps 1 to 3, and will not be repeated here.

Step 510: The target NR UE obtains the target detection position allocated 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. The specific implementation has been introduced in step 310, and details are not repeated here.

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

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

a memory 601 for storing executable instructions;

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

Determine the Coreset resources associated with the exclusive search space of the NR UE, the Coreset resources occupy the full bandwidth in the frequency domain, occupy the non-first 3 symbols in the downlink time slot in the time domain and last for N symbols, and do not conflict with the designated symbols , wherein the N is a preset value, and the designated symbols include: symbols occupied by the common control channel and demodulation signals in the NR system and the Long Term Evolution LTE system;

Based on the detection capability of the target NR UE, the target detection position of the target NR UE is set in the downlink time slot;

Based on the Coreset resources and the target detection position, resources occupied by the NR PDCCH are allocated to the target NR UE.

Wherein, as shown in FIG. 6 , the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by processor 602 and various circuits of memory represented by memory 601 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides the interface. A transceiver may be a number of elements, including a transmitter and a transceiver, that provide a means for communicating with various other devices 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 Coreset resource associated with the NR UE-specific search space, the processor 602 is further configured to:

Configure the Coreset resource associated with the NR UE-specific search space; or,

Based on the notification of the high-level device, obtain the Coreset resources associated with the NR UE-specific search space configured by the high-level.

Optionally, based on the detection capability of the target NR UE, the target detection position of the target NR UE is set in the downlink time slot, and the processor 602 is used for:

In the downlink time slot, determine each candidate detection position, and each candidate detection position is located in the transmission interval between the symbols occupied by the common control channel and the demodulated signal in the NR system and the LTE system;

When it is determined that the detection capability of the target NR UE reaches a preset threshold, each candidate detection position is set as the target detection position of the target NR UE; or,

When it is determined that the detection capability of the target NR UE does not reach the preset threshold, in each candidate detection position, a candidate detection position is selected and set as the target detection position of the target NR UE.

Optionally, based on the Coreset resources and the target detection position, allocate resources occupied by the NR PDCCH for the target NR UE, and the processor 602 is configured to:

Determine the target NR UE based on the resources occupied by the NR PDCCH allocated to each NR UE, the average number of CCEs contained in the control channel element, and the number of first persistent symbols of the corresponding first historical Coreset resources within the first specified historical period The minimum value of the NR downlink available bandwidth in the Coreset resource;

Based on the minimum value and the target detection position, resources occupied by the NR PDCCH are allocated to the target NR UE.

Optionally, based on the minimum value and the target detection position, allocate resources occupied by the NR PDCCH, and the processor 602 is configured to:

If it is determined that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources does not reach the set threshold within the second specified historical period, directly based on the minimum value and the target detection position, the target NR UE is Allocate resources occupied by NR PDCCH;

If it is determined that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources reaches the set threshold within the second specified historical period, the step size is further increased based on the preset CCE corresponding to the NR PDCCH used for scheduling uplink resources, and The second continuous symbol number of the corresponding second historical Coreset resource, determine the number of PRBs to increase, and then based on the minimum value, the number of PRBs and the target detection position, allocate the resources occupied by the NR PDCCH for the target NR UE .

Based on the same inventive concept, referring to FIG. 7 , an embodiment of the present disclosure provides a network device (eg, a base station), which at least includes a determining unit 701 , a setting unit 702 and an allocating unit 703 , wherein,

Determining unit 701, configured to determine the Coreset resources associated with the NRUE-specific search space, the Coreset resources occupy the full bandwidth in the frequency domain, and occupy the non-first 3 symbols in the downlink time slot in the time domain and last for N symbols, and Does not conflict with the designated symbol, wherein the N is a preset value, and the designated symbol includes: the common control channel and the symbol occupied by the demodulation signal in the NR system and the LTE system;

Setting unit 702, for setting the target detection position of the target NR UE in the downlink time slot based on the detection capability of the target NR UE;

An allocation unit 703, configured to allocate 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, the foregoing determining unit 701 , setting unit 702 , and allocating unit 703 cooperate with each other to implement any one of the methods performed on 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 (eg, NR UE), which at least includes:

a memory 801 for storing executable instructions;

The processor 802 is used for reading the program in the memory 801, and performs the following processes:

Obtain the Coreset resource configured on the network side, the Coreset resource occupies the full bandwidth in the frequency domain, occupies the non-first 3 symbols in the downlink time slot in the time domain and lasts for N symbols, and does not conflict with the designated symbol, wherein, The N is a preset value, and the designated symbols include: symbols occupied by common control channels and demodulation signals in the NR system and the LTE system;

Obtain the target detection position assigned by the network side;

In the downlink time slot, blind detection is performed on the NR PDCCH at the target detection position.

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

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 (eg, NR UE), which at least includes a first acquisition unit 901, a second acquisition unit 902, and a detection unit 903, wherein,

The first obtaining unit 901 is configured to obtain Coreset resources configured on the network side, wherein the Coreset resources occupy the full bandwidth in the frequency domain, and occupy the non-first 3 symbols in the downlink time slot in the time domain and last for N symbols , and does not conflict with the designated symbol, wherein the N is a preset value, and the designated symbol includes: the common control channel and the symbol occupied by the demodulation signal in the NR system and the LTE system;

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

The detection unit 903 is configured to perform blind detection on the NR PDCCH at the target detection position in the downlink time slot.

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 one of the methods performed by the NR UE in the foregoing embodiments.

Based on the same inventive concept, an embodiment of the present disclosure provides a computer-readable storage medium, when an instruction in the computer-readable storage medium is executed by a processor, the processor can execute the network-side execution in the foregoing embodiments. any of the methods.

Based on the same inventive concept, an embodiment of the present disclosure provides a computer-readable storage medium, when the instructions in the computer-readable storage medium are executed by a processor, the processor can execute the execution of the NE UE in the foregoing embodiments. any of the methods.

To sum up, in the embodiment of the present disclosure, the network side allocates NR PDCCH occupancy to the target NR UE at the corresponding target detection position in the downlink time slot based on the Coreset resources associated with the NRUE-specific search space and the detection capability of the target NR UE. resources; the Coreset resources occupy the full bandwidth in the frequency domain, occupy the non-first 3 symbols in the downlink time slot in the time domain and last for N symbols, and do not conflict with the designated symbols, and the designated symbols include: NR The symbols occupied by the common control channel and demodulation signal in the system and the LTE system; in this way, in the shared spectrum mode, the network side can accurately allocate the target NR UE occupied by the NR PDCCH in the downlink time slot by dynamic adjustment. resources, thereby effectively reducing the probability of allocation conflict between the resources occupied by the NR PDCCH and the resources occupied by the LTE PDCCH, and at the same time, it can better improve the efficiency of spectrum use.

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, etc.) 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 in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

While the preferred embodiments of the present disclosure have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of the present disclosure.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the spirit and scope of the present disclosure. Thus, provided that these 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 also intended to cover such modifications and variations.

Claims (16)

1. A new air interface NR physical downlink control channel PDCCH resource allocation method under spectrum sharing is characterized in that, comprising:

   determining a control resource set Coreset resource associated with the NR user equipment UE-specific search space, the Coreset resource occupying the full bandwidth in the frequency domain, and occupying the non-first 3 symbols in the downlink time slot in the time domain for N symbols, and Does not conflict with a designated symbol, wherein the N is a preset value, and the designated symbol includes: symbols occupied by common control channels and demodulation signals in the NR system and the long-term evolution LTE system;

   Based on the detection capability of the target NR UE, the target detection position of the target NR UE is set in the downlink time slot;

   Based on the Coreset resources and the target detection position, resources occupied by the NR PDCCH are allocated to the target NR UE.
2. The method according to claim 1, characterized in that, before determining the Coreset resource associated with the NR UE-specific search space, further comprising:

   Configure the Coreset resource associated with the NR UE-specific search space; or,

   Based on the notification of the high-level device, obtain the Coreset resources associated with the NR UE-specific search space configured by the high-level.
3. The method according to claim 1, wherein, based on the detection capability of the target NR UE, setting the target detection position of the target NR UE in the downlink time slot, comprising:

   In the downlink time slot, determine each candidate detection position, and each candidate detection position is located in the transmission interval between the symbols occupied by the common control channel and the demodulated signal in the NR system and the LTE system;

   When it is determined that the detection capability of the target NR UE reaches a preset threshold, each candidate detection position is set as the target detection position of the target NR UE; or,

   When it is determined that the detection capability of the target NR UE does not reach the preset threshold, in each candidate detection position, a candidate detection position is selected and set as the target detection position of the target NR UE.
4. The method according to claim 1, 2 or 3, wherein, based on the Coreset resources and the target detection position, allocating resources occupied by an NR PDCCH for the target NR UE, comprising:

   Determine the target NR UE based on the resources occupied by the NR PDCCH allocated to each NR UE, the average number of CCEs contained in the control channel element, and the number of first persistent symbols of the corresponding first historical Coreset resources within the first specified historical period The minimum value of the NR downlink available bandwidth in the Coreset resource;

   Based on the minimum value and the target detection position, resources occupied by the NR PDCCH are allocated to the target NR UE.
5. The method of claim 4, wherein, based on the minimum value and the target detection position, allocating resources occupied by the NR PDCCH, comprising:

   If it is determined that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources does not reach the set threshold within the second specified historical period, directly based on the minimum value and the target detection position, the target NR UE is Allocate resources occupied by NR PDCCH;

   If it is determined that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources reaches the set threshold within the second specified historical period, the step size is further increased based on the preset CCE corresponding to the NR PDCCH used for scheduling uplink resources, and The second continuous symbol number of the corresponding second historical Coreset resource, determine the number of PRBs to increase, and then based on the minimum value, the number of PRBs and the target detection position, allocate the resources occupied by the NR PDCCH for the target NR UE .
6. A method for detecting a new air interface NR physical downlink control channel PDCCH under spectrum sharing, comprising:

   Obtain the control resource set Coreset resource configured on the network side, the Coreset resource occupies the full bandwidth in the frequency domain, occupies the non-first 3 symbols in the downlink time slot in the time domain and lasts for N symbols, and does not conflict with the designated symbol , wherein the N is a preset value, and the designated symbols include: symbols occupied by the common control channel and demodulation signals in the NR system and the Long Term Evolution LTE system;

   Obtain the target detection position assigned by the network side;

   In the downlink time slot, blind detection is performed on the NR PDCCH at the target detection position.
7. A device for allocating NR PDCCH resources under spectrum sharing, comprising:

   memory for storing executable instructions;

   A processor for reading and executing executable instructions stored in memory to perform the following processes:

   determining a control resource set Coreset resource associated with the NR user equipment UE-specific search space, the Coreset resource occupying the full bandwidth in the frequency domain, and occupying the non-first 3 symbols in the downlink time slot in the time domain for N symbols, and Does not conflict with a designated symbol, wherein the N is a preset value, and the designated symbol includes: symbols occupied by common control channels and demodulation signals in the NR system and the long-term evolution LTE system;

   Based on the detection capability of the target NR UE, the target detection position of the target NR UE is set in the downlink time slot;

   Based on the Coreset resources and the target detection position, resources occupied by the NR PDCCH are allocated to the target NR UE.
8. The apparatus of claim 7, wherein before determining the Coreset resource associated with the NR UE-specific search space, the processor is further configured to:

   Configure the Coreset resource associated with the NR UE-specific search space; or,

   Based on the notification of the high-level device, obtain the Coreset resources associated with the NR UE-specific search space configured by the high-level.
9. The apparatus according to claim 7, wherein, based on the detection capability of the target NR UE, the target detection position of the target NR UE is set in the downlink time slot, and the processor is configured to:

   In the downlink time slot, determine each candidate detection position, and each candidate detection position is located in the transmission interval between the symbols occupied by the common control channel and the demodulated signal in the NR system and the LTE system;

   When it is determined that the detection capability of the target NR UE reaches a preset threshold, each candidate detection position is set as the target detection position of the target NR UE; or,

   When it is determined that the detection capability of the target NR UE does not reach the preset threshold, in each candidate detection position, a candidate detection position is selected and set as the target detection position of the target NR UE.
10. The apparatus according to claim 7, 8 or 9, wherein, based on the Coreset resources and the target detection position, resources occupied by the NR PDCCH are allocated to the target NR UE, and the processor is configured to:

    Determine the target NR UE based on the resources occupied by the NR PDCCH allocated to each NR UE, the average number of CCEs contained in the control channel element, and the number of first persistent symbols of the corresponding first historical Coreset resources within the first specified historical period The minimum value of the NR downlink available bandwidth in the Coreset resource;

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

    If it is determined that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources does not reach the set threshold within the second specified historical period, directly based on the minimum value and the target detection position, the target NR UE is Allocate resources occupied by NR PDCCH;

    If it is determined that the number of resource allocation failures corresponding to the NR PDCCH used for scheduling uplink resources reaches the set threshold within the second specified historical period, the step size is further increased based on the preset CCE corresponding to the NR PDCCH used for scheduling uplink resources, and The second continuous symbol number of the corresponding second historical Coreset resource, determine the number of PRBs to increase, and then based on the minimum value, the number of PRBs and the target detection position, allocate the resources occupied by the NR PDCCH for the target NR UE .
12. A device for detecting a new air interface NR physical downlink control channel PDCCH under spectrum sharing, characterized in that it includes:

    memory for storing executable instructions;

    A processor for reading and executing executable instructions stored in memory to perform the following processes:

    Obtain the control resource set Coreset resource configured on the network side, the Coreset resource occupies the full bandwidth in the frequency domain, occupies the non-first 3 symbols in the downlink time slot in the time domain and lasts for N symbols, and does not conflict with the designated symbol , wherein the N is a preset value, and the designated symbols include: symbols occupied by the common control channel and demodulation signals in the NR system and the Long Term Evolution LTE system;

    Obtain the target detection position assigned by the network side;

    In the downlink time slot, blind detection is performed on the NR PDCCH at the target detection position.
13. A new air interface NR physical downlink control channel PDCCH resource allocation device under spectrum sharing is characterized in that, comprising:

    The determining unit is used to determine the Coreset resource of the control resource set associated with the dedicated search space of the NR user equipment UE, the Coreset resource occupies the full bandwidth in the frequency domain, and occupies the non-first 3 symbols in the downlink time slot in the time domain and continues N symbols, which do not conflict with designated symbols, where N is a preset value, and the designated symbols include: symbols occupied by common control channels and demodulation signals in the NR system and the Long Term Evolution LTE system;

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

    an allocation unit, configured to allocate resources occupied by the NR PDCCH for the target NR UE based on the Coreset resources and the target detection position.
14. A device for detecting a new air interface NR physical downlink control channel PDCCH under spectrum sharing, characterized in that it includes:

    The first obtaining unit is used to obtain the coreset resource of the control resource set configured by the network side, the coreset resource occupies the full bandwidth in the frequency domain, and occupies the non-first 3 symbols in the downlink time slot in the time domain and lasts for N symbols , and does not conflict with the designated symbol, wherein the N is a preset value, and the designated symbol includes: the symbols occupied by the common control channel and the demodulation signal in the NR system and the Long Term Evolution LTE system;

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

    A detection unit, configured to perform blind detection on the NR PDCCH at the target detection position in the downlink time slot.
15. A computer-readable storage medium, characterized in that, when the instructions in the computer-readable storage medium are executed by a processor, the processor is enabled to execute the method according to any one of claims 1-5 .
16. A computer-readable storage medium, wherein the instructions in the computer-readable storage medium, when executed by a processor, enable the processor to perform the method of claim 6.

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