NR PDCCH resource allocation method and device under spectrum sharing

Abstract

The present disclosure discloses a NR PDCCH resource allocation method and device under spectrum sharing, which are used to solve the resource conflict problem. The method is: the network side sets the Coreset resources associated with the NR UE exclusive search space to occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot and continue for N symbols in the time domain, and do not conflict with designated symbols, and the designated symbols include: symbols occupied by common control channels and demodulation signals in the NR system and the LTE system; in this way, under the shared spectrum mode, the network side can use a dynamic adjustment method in the downlink time slot to accurately allocate the resources occupied by the NR PDCCH to the target NR UE, 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 can better improve the spectrum utilization efficiency.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a method and device for allocating NR PDCCH resources under spectrum sharing. Background Art

[0002] The existing wireless communication systems involve the Long Term Evolution (LTE) system and the fifth generation (5G) New Radio (NR) system. With the development of wireless communication technology, there have been problems such as tight spectrum resources, low spectrum resource utilization, and severe spectrum fragmentation. The emergence of carrier aggregation technology and dynamic spectrum sharing technology has brought hope for efficient spectrum utilization.

[0003] However, in the 5G NR mobile communication system, the uplink and downlink scheduling resources need to be carried in the Physical Downlink Control Channel (PDCCH); the 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 utilization, spectrum sharing technology needs to be adopted. In theory, spectrum sharing can be divided into two methods:

[0004] 1) Partially shared spectrum.

[0005] See also Figure 1A As shown in the figure, when partial shared spectrum 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 on the bandwidth that is available to the NR system but does not overlap with the LTE system.

[0006] 2) Fully shared spectrum approach.

[0007] See also Figure 1B As shown in the figure, when a full shared spectrum mode is adopted, the maximum available bandwidth of the NR system and the LTE system is the same, for example, the maximum available bandwidth of the NR system and the LTE system are both 20MHz; in a full shared spectrum mode, the LTE PDCCH occupies the frequency domain resources of the entire frequency band, while the time-frequency resources occupied by the NR PDCCH need to be dynamically configured accordingly.

[0008] So, in a fully shared spectrum mode, how to avoid affecting LTE PDCCH during dynamic configuration of NR PDCCH? There is no effective solution for the time-frequency resource allocation of NR PDCCH in the existing technology.

[0009] It can be seen from this that a new solution needs to be designed to overcome the above-mentioned defects. Summary of the invention

[0010] The present disclosure provides a method and apparatus for allocating NR PDCCH resources under spectrum sharing, so as to solve the problem of allocation conflict between resources occupied by NR PDCCH and resources occupied by LTE PDCCH as the NR system is dynamically adjusted under spectrum sharing.

[0011] The specific technical solutions provided by the embodiments of the present disclosure are as follows:

[0012] In a first aspect, a method for allocating PDCCH resources of a new radio interface NR physical downlink control channel under spectrum sharing includes:

[0013] Determine the control resource set Coreset resources associated with the NR user equipment UE exclusive search space, where the Coreset resources occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot in the time domain and continue for N symbols, and do not conflict with the 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;

[0014] Based on the detection capability of the target NR UE, setting a target detection position of the target NR UE in a downlink timeslot;

[0015] Based on the Coreset resources and the target detection position, resources occupied by NR PDCCH are allocated to the target NR UE.

[0016] Optionally, before determining the Coreset resources associated with the NR UE-specific search space, the method further includes:

[0017] Configure Coreset resources associated with the NR UE-specific search space; or,

[0018] Based on high-level device notification, obtain the Coreset resources associated with the NR UE-specific search space configured by the high-level device.

[0019] Optionally, based on the detection capability of the target NR UE, setting the target detection position of the target NR UE in the downlink timeslot includes:

[0020] In a downlink time slot, determine each candidate detection position, where each candidate detection position is located in a transmission interval between symbols occupied by a common control channel and a demodulated signal in the NR system and the LTE system;

[0021] 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,

[0022] When it is determined that the detection capability of the target NR UE does not reach the preset threshold, a candidate detection position is selected from each candidate detection position and set as the target detection position of the target NR UE.

[0023] Optionally, based on the Coreset resources and the target detection position, allocating resources occupied by NRPDCCH to the target NR UE includes:

[0024] Determine a minimum value of the NR downlink available bandwidth of the target NR UE in the Coreset resources based on the resources occupied by the NR PDCCH allocated to each NR UE in the first specified historical period, the average number of control channel elements CCE included, and the first continuous symbol number of the corresponding first historical Coreset resources;

[0025] Based on the minimum value and the target detection position, resources occupied by NR PDCCH are allocated to the target NR UE.

[0026] Optionally, allocating resources occupied by the NR PDCCH based on the minimum value and the target detection position includes:

[0027] If it is determined that the number of resource allocation failures corresponding to the NR PDCCH for scheduling uplink resources does not reach the set threshold within the second specified historical period, directly allocating resources occupied by the NR PDCCH to the target NR UE based on the minimum value and the target detection position;

[0028] If it is determined that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources reaches a set threshold, then the number of PRBs to be increased is further determined based on the preset CCE increase step size for the NR PDCCH used to schedule uplink resources and the second continuous symbol number of the corresponding second historical Coreset resources, and then based on the minimum value, the number of PRBs and the target detection position, the resources occupied by the NR PDCCH are allocated to the target NR UE.

[0029] In a second aspect, a method for detecting a new radio interface NR physical downlink control channel NR PDCCH under spectrum sharing includes:

[0030] Obtain the control resource set Coreset resources configured on the network side, wherein the Coreset resources occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot in the time domain and continue for N symbols, and do not conflict with the designated symbols, wherein 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;

[0031] Obtain the target detection position assigned by the network side;

[0032] In the downlink time slot, blind detection is performed on the NR PDCCH at the target detection position.

[0033] In a third aspect, a NR PDCCH resource allocation device under spectrum sharing includes:

[0034] A memory for storing executable instructions;

[0035] The processor is configured to read and execute the executable instructions stored in the memory to perform the following processes:

[0036] Determine the control resource set Coreset resources associated with the NR user equipment UE exclusive search space, where the Coreset resources occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot in the time domain and continue for N symbols, and do not conflict with the 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;

[0037] Based on the detection capability of the target NR UE, setting a target detection position of the target NR UE in a downlink timeslot;

[0038] Based on the Coreset resources and the target detection position, resources occupied by NR PDCCH are allocated to the target NR UE.

[0039] Optionally, before determining the Coreset resources associated with the NR UE-specific search space, the processor is further used to:

[0040] Configure Coreset resources associated with the NR UE-specific search space; or,

[0041] Based on high-level device notification, obtain the Coreset resources associated with the NR UE-specific search space configured by the high-level device.

[0042] Optionally, based on the detection capability of the target NR UE, a target detection position of the target NR UE is set in a downlink timeslot, and the processor is used to:

[0043] In a downlink time slot, determine each candidate detection position, where each candidate detection position is located in a transmission interval between symbols occupied by a common control channel and a demodulated signal in the NR system and the LTE system;

[0044] 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,

[0045] When it is determined that the detection capability of the target NR UE does not reach the preset threshold, a candidate detection position is selected from each candidate detection position and set as the target detection position of the target NR UE.

[0046] Optionally, based on the Coreset resources and the target detection position, allocating resources occupied by NRPDCCH for the target NR UE, the processor being configured to:

[0047] Determine a minimum value of the NR downlink available bandwidth of the target NR UE in the Coreset resources based on the resources occupied by the NR PDCCH allocated to each NR UE in the first specified historical period, the average number of control channel elements CCE included, and the first continuous symbol number of the corresponding first historical Coreset resources;

[0048] Based on the minimum value and the target detection position, resources occupied by NR PDCCH are allocated to the target NR UE.

[0049] Optionally, based on the minimum value and the target detection position, allocating resources occupied by the NR PDCCH, the processor being configured to:

[0050] If it is determined that the number of resource allocation failures corresponding to the NR PDCCH for scheduling uplink resources does not reach the set threshold within the second specified historical period, directly allocating resources occupied by the NR PDCCH to the target NR UE based on the minimum value and the target detection position;

[0051] If it is determined that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources reaches a set threshold, then the number of PRBs to be increased is further determined based on the preset CCE increase step size for the NR PDCCH used to schedule uplink resources and the second continuous symbol number of the corresponding second historical Coreset resources, and then based on the minimum value, the number of PRBs and the target detection position, the resources occupied by the NR PDCCH are allocated to the target NR UE.

[0052] In a fourth aspect, a device for detecting a new radio interface NR physical downlink control channel NR PDCCH under spectrum sharing includes:

[0053] A memory for storing executable instructions;

[0054] The processor is configured to read and execute the executable instructions stored in the memory to perform the following processes:

[0055] Obtain the control resource set Coreset resources configured on the network side, wherein the Coreset resources occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot in the time domain and continue for N symbols, and do not conflict with the designated symbols, wherein 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;

[0056] Obtain the target detection position assigned by the network side;

[0057] In the downlink time slot, blind detection is performed on the NR PDCCH at the target detection position.

[0058] In a fifth aspect, a new radio interface NR physical downlink control channel PDCCH resource allocation device under spectrum sharing includes:

[0059] A determination unit, configured to determine a control resource set Coreset resource associated with an NR user equipment UE exclusive search space, wherein the Coreset resource occupies the full bandwidth in the frequency domain, occupies non-first 3 symbols in a downlink time slot in the time domain and continues for N symbols, and does not conflict with a designated symbol, wherein N is a preset value, and the designated symbol includes: symbols occupied by a common control channel and a demodulated signal in an NR system and a long term evolution LTE system;

[0060] A setting unit, configured to set a target detection position of the target NR UE in a downlink timeslot based on the detection capability of the target NR UE;

[0061] An allocation unit is used to allocate resources occupied by NR PDCCH to the target NR UE based on the Coreset resources and the target detection position.

[0062] In a sixth aspect, a device for detecting a new radio interface NR physical downlink control channel NR PDCCH under spectrum sharing includes:

[0063] A first acquisition unit is used to obtain a control resource set Coreset resource configured by the network side, wherein the Coreset resource occupies the full bandwidth in the frequency domain, occupies non-first 3 symbols in the downlink time slot and continues for N symbols in the time domain, and does not conflict with the designated symbol, wherein 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;

[0064] A second acquisition unit is used to obtain a target detection position allocated by a network side;

[0065] The detection unit is used to perform blind detection on the NR PDCCH at the target detection position in the downlink time slot.

[0066] In a seventh aspect, a computer-readable storage medium is provided. When instructions in the computer-readable storage medium are executed by a processor, the processor is enabled to execute any one of the methods described in the first aspect.

[0067] In an eighth aspect, a computer-readable storage medium is provided. When instructions in the computer-readable storage medium are executed by a processor, the processor is enabled to execute any one of the methods in the second aspect.

[0068] In the disclosed embodiment of the present invention, the network side allocates resources occupied by 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 NR UE-specific search space and the detection capability of the target NR UE; the Coreset resources occupies the full bandwidth in the frequency domain, occupies non-first 3 symbols in the downlink time slot and continues for N symbols in the time domain, and does not conflict with designated symbols, and the designated symbols include: symbols occupied by common control channels and demodulation signals in the NR system and the LTE system; in this way, under the shared spectrum mode, the network side can use a dynamic adjustment method in the downlink time slot to accurately allocate resources occupied by NR PDCCH to the target NR UE, thereby effectively reducing the probability of allocation conflict between the resources occupied by NR PDCCH and the resources occupied by LTE PDCCH, and at the same time, it can also better improve the spectrum utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1A It is a schematic diagram of part of the shared spectrum under the existing technology;

[0070] Figure 1B It is a schematic diagram of fully shared spectrum under existing technologies;

[0071] Figure 2 This is a schematic diagram of resources occupied by NR PDCCH allocated based on non-shared spectrum under existing technologies;

[0072] Figure 3 A schematic diagram of a process for allocating resources occupied by NR PDCCH under spectrum sharing in an embodiment of the present disclosure;

[0073] Figure 4 Schematic diagram of time-frequency domain resource distribution in a shared spectrum mode in an embodiment of the present disclosure;

[0074] Figure 5 It is a schematic diagram of the process of blindly detecting NR PDCCH by NR UE based on Coreset resources configured on the network side in an embodiment of the present disclosure;

[0075] Figure 6 A schematic diagram of a physical architecture of a network device in an embodiment of the present disclosure;

[0076] Figure 7 A schematic diagram of a logical architecture of a network device in an embodiment of the present disclosure;

[0077] Figure 8 A schematic diagram of a computer device physical architecture according to an embodiment of the present disclosure;

[0078] Fig. 9 A schematic diagram of a logical architecture of a computer device in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0079] In the prior art, see Figure 2 As shown, 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 (ControlResource Set, Coreset) resource for the dedicated search space association of the NR UE, wherein the Coreset resource occupies 1-3 symbols in the NR system frequency band in the time domain and occupies the entire bandwidth or part of the bandwidth of the NR system in the frequency domain.

[0080] The network side will configure the resources occupied by NR PDCCH for each NR UE in the Coreset resources, and each NR UE needs to detect NR PDCCH in the configured Coreset resources through blind detection to obtain specific indication information.

[0081] However, in the shared spectrum mode, the resources occupied by LTE PDCCH are fixed to 1-3 symbols of the full frequency band in each time slot. Therefore, the resources occupied by 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 NR PDCCH need to be dynamically adjusted based on the available bandwidth.

[0082] In the dynamic adjustment of the NR system, there will inevitably be a conflict in the allocation of resources occupied by the NR PDCCH and the LTE PDCCH.

[0083] In order to solve the above problems, in an embodiment of the present disclosure, a solution for NR PDCCH resource allocation under spectrum sharing is provided.

[0084] The preferred embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0085] In the embodiment of the present disclosure, in the pre-configuration stage, the network side needs to set a Coreset resource associated with a dedicated search space for the NR UE, see Figure 3 The specific setting process is as follows:

[0086] Step 300: The network side configures the Coreset resources associated with the NR UE-specific search space to occupy the full bandwidth in the frequency domain.

[0087] In a specific implementation, the full bandwidth may be greater than the actual occupied bandwidth of the NR system, and the modulation symbols in the Coreset resources adopt a non-interleaved mapping mode on the bandwidth.

[0088] For example: See Figure 3 As shown, the Coreset resources associated with the NR UE-specific search space are configured for the 4-port LTE cell reference signal (CRS) as an example.

[0089] Taking a downlink time slot as an example, the network side will configure the Coreset resources 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.

[0090] Step 310: The network side configures the Coreset resources associated with the NR UE-specific search space to occupy non-first 3 symbols in the downlink time slot in the time domain and for N symbols, and not to 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 LTE system.

[0091] 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 channels and demodulation signals in the NR system and 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 signals transmitted through common channels.

[0092] For example: See Figure 4 As shown, the Coreset resources associated with the NR UE exclusive search space are still configured for the LTE CRS4 port as an example.

[0093] Taking a downlink time slot as an example, in the LTE system, the resources occupied by the LTE PDCCH are determined according to the 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; among which, the resources occupied by the LTE CRS are spaced 2 symbols apart in the time domain.

[0094] Then, the Coreset resources need to avoid the first three symbols occupied by the resources occupied by the LTE PDCCH in the time domain, and avoid symbols 4, 7, 8, and 11 occupied by the resources occupied by the LTE CRS in the time domain.

[0095] Then, the network side configures the Coreset 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, that is, N=2.

[0096] In a specific embodiment, the Coreset resources may be distributed on a plurality of candidate detection positions, and the plurality of candidate detection positions are distributed between the resources occupied by the LTE CRS in the time domain and last for a duration of 2 symbols.

[0097] like Figure 4 As shown, in the embodiment of the present disclosure, the Coreset resource corresponds to three candidate detection positions in the time domain, which start at symbol 5, symbol 9 and symbol 12 respectively and last for 2 symbols.

[0098] Step 320: The network side notifies each NR UE of the configured Coreset resources.

[0099] In this way, each NR UE obtains the Coreset resources configured by the network side. In the subsequent process, each NR UE can perform blind detection on the NR PDCCH at the target detection position notified by the network side according to the Coreset resources, thereby obtaining the specific instructions issued by the NR PDCCH.

[0100] See also Figure 4 As shown, in the embodiment of the present disclosure, the specific process of the network side allocating resources occupied by NR PDCCH to the target NR UE is as follows:

[0101] Step 400: The network side determines the Coreset resources associated with the NR UE-specific search space.

[0102] In a specific implementation, the configuration method of the time-frequency resources occupied by the Coreset resources has been introduced in detail in steps 300 to 310, and will not be repeated here.

[0103] Optionally, in the above steps 300-310, 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. Furthermore, the above setting process can also be completed by a high-level device, and the high-level device notifies the network side device, which will not be repeated here.

[0104] Step 410: 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.

[0105] Specifically, after accessing the system, each NR UE will report its own detection capability to the network side. The so-called NR UE detection capability may include but is not limited to the following parameters: the number of symbols between two detections, and the number of symbols that a detection lasts.

[0106] In a specific implementation, when executing step 410, 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, wherein each candidate detection position is located in the transmission interval between the symbols occupied by the common control channels and demodulation signals in the NR system and the LTE system. This ensures that the Coreset resources do not conflict with the symbols occupied by the common control channels and demodulation signals in the above-mentioned NR system and LTE system, thereby effectively realizing spectrum sharing.

[0107] 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 is not limited to the following two methods:

[0108] Method 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.

[0109] For example, see Figure 4 As shown, the Coreset resources associated with the NR UE exclusive search space configuration for LTE CRS 4 ports are still taken as an example.

[0110] Assuming that the detection capability of the target NR UE reaches the preset threshold, then, Figure 4 As shown, taking a downlink time slot as an example, there are three candidate detection positions, with symbol 5, symbol 9 and symbol 12 as the starting positions respectively. The network side will set the three candidate detection positions as the target detection positions of the target NR UE.

[0111] Method 2: When the network side determines that the detection capability of the target NR UE does not reach the preset threshold, a candidate detection position is selected from each candidate detection position and set as the target detection position of the target NR UE.

[0112] For example, see Figure 4 As shown, the Coreset resources associated with the NR UE exclusive search space configuration for LTE CRS 4 ports are still taken as an example.

[0113] Assuming that the detection capability of the target NR UE does not reach the preset threshold, then, if Figure 4 As shown, taking a downlink time slot as an example, there are three candidate detection positions, with symbol 5, symbol 9 and symbol 12 as the starting positions respectively. Then, the network side will select a candidate detection position from them and set it as the target detection position of the target NR UE. Optionally, the network side will select the candidate detection position with the least number of historical selections as the target detection position of the target NR UE. In this way, it can be ensured that the target NR UEs are evenly distributed in each candidate detection position.

[0114] like Figure 4As shown, assuming that there are three target NR UEs in the system, namely target NR UE1, target NR UE2 and target NR UE3, and assuming that there are three candidate detection positions, namely candidate detection position 1 (with symbol 5 as the 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 the number of historical selections of each of them is 0, then, since the number of historical selections of each candidate detection position is the least, the network side can evenly distribute the target NR UEs at each candidate detection position, such as, the network side sets candidate detection position 1 as the target detection position of target NR UE1, the network side sets candidate detection position 2 as the target detection position of target NR UE2, and the network side sets candidate detection position 3 as the target detection position of target NR UE3.

[0115] Step 420: The network side allocates resources occupied by NR PDCCH to the target NR UE based on the Coreset resources and the target detection location.

[0116] In the embodiment of the present disclosure, in the specific implementation, when executing step 420, the network side will determine the minimum value of the NR downlink available bandwidth of the target NR UE in the Coreset resources based on the resources occupied by the NR PDCCH allocated to each NR UE within the first specified historical period, including the average number of control channel elements (CCE) Z and the first continuous symbol number Y1 of the corresponding first historical Coreset resource, and allocate the resources occupied by the NR PDCCH to the target NR UE based on the minimum value and the target detection position.

[0117] For example, taking a downlink time slot as an example, assuming that during the first specified historical period, the resources occupied by the NR PDCCH allocated by the network side to each NR UE include an average number of CCEs of 4, and the number of continuous symbols of the first historical Coreset resources used during the first specified historical period is 2, then the minimum value of the NR downlink available bandwidth in the Coreset resources determined by the network side for the target NR UE is Ceil(Z*6 / Y1)=4*6 / 2=12 physical resource blocks (PRB).

[0118] Then, see Figure 4As shown, assuming that a target detection position obtained by the target NR UE starts at symbol 5, the network side allocates the resources occupied by NR PDCCH to the target NR UE based on the 12 PRBs occupied in the frequency domain within the time domain range of symbol 5 and symbol 6 according to the duration of the Coreset resource of 2 symbols.

[0119] Further, in the embodiment of the present disclosure, when the network side allocates the resources occupied by the NRPDCCH based on the minimum value and the target detection position, it includes but is not limited to the following two methods:

[0120] Method a: If the network side determines that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources does not reach the set threshold, then the resources occupied by the NR PDCCH are directly allocated to the target NR UE based on the minimum value and the target detection position.

[0121] Method b: If the network side determines that the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources reaches a set threshold within the second specified historical period, it further determines the number of PRBs to be increased based on the number of CCEs X included in the preset CCE increase step for the NR PDCCH used to schedule uplink resources, and the second continuous symbol number Y2 of the corresponding second historical Coreset resources, and then allocates the 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.

[0122] For example, still taking a downlink time slot as an example, assuming that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources reaches the set threshold, and the number of CCEs included in the preset CCE increase step of the NR PDCCH corresponding to the scheduling of uplink resources is 1, and the number of continuous symbols of the corresponding second historical Coreset resources is 2, then the network side determines that the number of PRBs that need to be increased is Ceil(X*6 / Y2)=1*6 / 2=3, that is, the available width of NR downlink is: 12+3=15 PRBs.

[0123] Then, see Figure 4 As shown, assuming that the three target detection positions obtained by the target NR UE start at symbol 5, symbol 9 and symbol 12 respectively, the network side allocates the resources occupied by NR PDCCH to the target NR UE based on the 15 PRBs occupied in the frequency domain within the time domain range of symbols 5 and 6, symbols 9 and 10, symbols 12 and 13 according to the duration of the Coreset resources of 2 symbols.

[0124] 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, which will not be elaborated here.

[0125] Based on the above embodiments, see Figure 5 As shown, the detailed process of NR UE detecting and obtaining the resources occupied by NR PDCCH configured under spectrum sharing based on the network side notification is as follows:

[0126] Step 500: The target NR UE obtains the Coreset resources configured by the network side.

[0127] Optionally, the Coreset resources occupies the full bandwidth in the frequency domain, occupies non-first 3 symbols in the downlink time slot and lasts for N symbols in the time domain, and does not conflict with designated symbols; wherein N is a preset value, and the designated symbols include: symbols occupied by common control channels and demodulation signals in NR systems and LTE systems.

[0128] The configuration method of the Coreset resource has been introduced in step 300 to step 320 and will not be repeated here.

[0129] Step 510: The target NR UE obtains the target detection position allocated by the network side.

[0130] Optionally, the target detection position is allocated by the network side based on the detection capability of the target NR UE. The specific implementation method has been introduced in step 410 and will not be repeated here.

[0131] Step 520: The target NR UE performs blind detection on the NR PDCCH at the target detection position in the downlink time slot.

[0132] Based on the same inventive concept, refer to Figure 6 As shown, a network device (such as a base station) in an embodiment of the present disclosure at least includes:

[0133] Memory 601, used to store executable instructions;

[0134] The processor 602 is used to read and execute the executable instructions stored in the memory 601 to perform the following process:

[0135] Determine the Coreset resources associated with the NR UE-specific search space, where the Coreset resources occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot and continue for N symbols in the time domain, and do not conflict with the 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;

[0136] Based on the detection capability of the target NR UE, setting a target detection position of the target NR UE in a downlink timeslot;

[0137] Based on the Coreset resources and the target detection position, resources occupied by NR PDCCH are allocated to the target NR UE.

[0138] Among them, Figure 6 As shown, 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 are therefore not further described herein. The bus interface provides an interface. The transceiver may be a plurality of components, namely, a transmitter and a transceiver, providing a unit for communicating with various other devices on 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 when performing operations.

[0139] Optionally, before determining the Coreset resources associated with the NR UE-specific search space, the processor 602 is further configured to:

[0140] Configure Coreset resources associated with the NR UE-specific search space; or,

[0141] Based on high-level device notification, obtain the Coreset resources associated with the NR UE-specific search space configured by the high-level device.

[0142] Optionally, based on the detection capability of the target NR UE, a target detection position of the target NR UE is set in a downlink timeslot, and the processor 602 is used to:

[0143] In a downlink time slot, determine each candidate detection position, where each candidate detection position is located in a transmission interval between symbols occupied by a common control channel and a demodulated signal in the NR system and the LTE system;

[0144] 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,

[0145] When it is determined that the detection capability of the target NR UE does not reach the preset threshold, a candidate detection position is selected from each candidate detection position and set as the target detection position of the target NR UE.

[0146] Optionally, based on the Coreset resources and the target detection position, allocating resources occupied by NRPDCCH for the target NR UE, the processor 602 is configured to:

[0147] Determine a minimum value of the NR downlink available bandwidth of the target NR UE in the Coreset resources based on the resources occupied by the NR PDCCH allocated to each NR UE in the first specified historical period, the average number of control channel elements CCE included, and the first continuous symbol number of the corresponding first historical Coreset resources;

[0148] Based on the minimum value and the target detection position, resources occupied by NR PDCCH are allocated to the target NR UE.

[0149] Optionally, based on the minimum value and the target detection position, allocating resources occupied by the NR PDCCH, the processor 602 is configured to:

[0150] If it is determined that the number of resource allocation failures corresponding to the NR PDCCH for scheduling uplink resources does not reach the set threshold within the second specified historical period, directly allocating resources occupied by the NR PDCCH to the target NR UE based on the minimum value and the target detection position;

[0151] If it is determined that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources reaches a set threshold, then the number of PRBs to be increased is further determined based on the preset CCE increase step size for the NR PDCCH used to schedule uplink resources and the second continuous symbol number of the corresponding second historical Coreset resources, and then based on the minimum value, the number of PRBs and the target detection position, the resources occupied by the NR PDCCH are allocated to the target NR UE.

[0152] Based on the same inventive concept, refer to Figure 7 As shown, the embodiment of the present disclosure provides a network device (eg, a base station), comprising at least a determining unit 701, a setting unit 702 and an allocating unit 703, wherein:

[0153] The determination unit 701 is used to determine the Coreset resources associated with the NR UE-specific search space, where the Coreset resources occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot and continue for N symbols in the time domain, and do not conflict with the designated symbols, wherein 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;

[0154] A setting unit 702 is configured to set a target detection position of the target NR UE in a downlink timeslot based on the detection capability of the target NR UE;

[0155] The allocation unit 703 is used to allocate resources occupied by NR PDCCH to the target NRUE based on the Coreset resources and the target detection position.

[0156] In the embodiment of the present disclosure, the above-mentioned determination unit 701, setting unit 702 and allocation unit 703 cooperate with each other to implement any one of the methods executed by the network side in the above-mentioned various embodiments.

[0157] Based on the same inventive concept, refer to Figure 8 As shown, in an embodiment of the present disclosure, a computer device (eg, NRUE) is provided, comprising at least:

[0158] Memory 801, used to store executable instructions;

[0159] The processor 802 is used to read the program in the memory 801 and execute the following process:

[0160] Obtain the Coreset resources configured on the network side, where the Coreset resources occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot in the time domain and continue for N symbols, and do not conflict with the 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 LTE system;

[0161] Obtain the target detection position assigned by the network side;

[0162] In the downlink time slot, blind detection is performed on the NR PDCCH at the target detection position.

[0163] Among them, Figure 8As shown, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 802 and various circuits of memory represented by 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 are therefore not further described herein. The bus interface provides an interface. The transceiver may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. For different user devices, the user interface may also be an interface capable of externally connecting or internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0164] The processor 802 is responsible for managing the bus architecture and general processing, and the memory 801 can store data used by the processor 802 when performing operations.

[0165] Based on the same inventive concept, refer to Fig. 9 As shown, the embodiment of the present disclosure provides a computer device (eg, NRUE), comprising at least a first acquisition unit 901, a second acquisition unit 902 and a detection unit 903, wherein:

[0166] The first acquisition unit 901 is used to obtain the Coreset resources configured by the network side, wherein the Coreset resources occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot in the time domain and continue for N symbols, and do not conflict with the designated symbols, wherein 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;

[0167] A second acquisition unit 902 is used to obtain a target detection position allocated by the network side;

[0168] The detection unit 903 is used to perform blind detection on the NR PDCCH at the target detection position in the downlink time slot.

[0169] In the disclosed embodiment, the first acquisition unit 901, the second acquisition unit 902 and the detection unit 903 cooperate with each other to implement any one of the methods executed by the NR UE in the above-mentioned embodiments.

[0170] Based on the same inventive concept, an embodiment of the present disclosure provides a computer-readable storage medium. 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 above-mentioned embodiments.

[0171] Based on the same inventive concept, an embodiment of the present disclosure provides a computer-readable storage medium. 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 NEUE in the above-mentioned embodiments.

[0172] To summarize, in the disclosed embodiment of the present invention, the network side allocates resources occupied by NRPDCCH to the target NR UE at the corresponding target detection position in the downlink time slot based on the Coreset resources associated with the NR UE-specific search space and the detection capability of the target NR UE; the Coreset resources occupies the full bandwidth in the frequency domain, occupies non-first 3 symbols in the downlink time slot and continues for N symbols in the time domain, and does not conflict with designated symbols, and the designated symbols include: symbols occupied by common control channels and demodulation signals in the NR system and the LTE system; in this way, under the shared spectrum mode, the network side can use a dynamic adjustment method in the downlink time slot to accurately allocate resources occupied by NR PDCCH to the target NR UE, thereby effectively reducing the probability of allocation conflict between the resources occupied by NR PDCCH and the resources occupied by LTE PDCCH, and at the same time, it can also better improve the spectrum utilization efficiency.

[0173] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0174] The present disclosure is described with reference to the flowchart and / or block diagram of the method, device (system), and computer program product according to the embodiment of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the process and / or box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one process or multiple processes in the flowchart and / or one box or multiple boxes in the block diagram.

[0175] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0176] These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0177] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present disclosure.

[0178] Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if 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 include these modifications and variations.

Claims

1. A method for allocating PDCCH resources of a new radio interface NR physical downlink control channel under spectrum sharing, characterized in that: include: Determine the control resource set Coreset resources associated with the NR user equipment UE exclusive search space, where the Coreset resources occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot in the time domain and continue for N symbols, and do not conflict with the 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; Based on the detection capability of the target NR UE, setting a target detection position of the target NR UE in a downlink timeslot; Determine a minimum value of the NR downlink available bandwidth of the target NRUE in the Coreset resources based on the resources occupied by the NR PDCCH allocated to each NR UE in the first specified historical period, the average number of control channel elements CCE included, and the first continuous symbol number of the corresponding first historical Coreset resources; If it is determined that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources does not reach the set threshold, the resources occupied by the NR PDCCH are allocated to the target NR UE directly based on the minimum value and the target detection position.

2. The method according to claim 1, characterized in that Before determining the Coreset resources associated with the NR UE-specific search space, further comprising: Configure Coreset resources associated with the NR UE-specific search space; or, Based on high-level device notification, obtain the Coreset resources associated with the NR UE-specific search space configured by the high-level device.

3. The method according to claim 1, characterized in that Based on the detection capability of the target NR UE, setting a target detection position of the target NR UE in a downlink timeslot includes: In a downlink time slot, determine each candidate detection position, where each candidate detection position is located in a transmission interval between symbols occupied by a common control channel and a 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, a candidate detection position is selected from each candidate detection position and set as the target detection position of the target NR UE.

4. The method according to claim 1, characterized in that Allocating resources occupied by the NR PDCCH based on the minimum value and the target detection position, including: If it is determined that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources reaches a set threshold, then the number of PRBs to be increased is further determined based on the preset CCE increase step size for the NR PDCCH used to schedule uplink resources and the second continuous symbol number of the corresponding second historical Coreset resources, and then based on the minimum value, the number of PRBs and the target detection position, the resources occupied by the NR PDCCH are allocated to the target NR UE.

5. A NR PDCCH resource allocation device under spectrum sharing, characterized in that: include: A memory for storing executable instructions; The processor is configured to read and execute the executable instructions stored in the memory to perform the following processes: Determine the control resource set Coreset resources associated with the NR user equipment UE exclusive search space, where the Coreset resources occupy the full bandwidth in the frequency domain, occupy non-first 3 symbols in the downlink time slot in the time domain and continue for N symbols, and do not conflict with the 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; Based on the detection capability of the target NR UE, setting a target detection position of the target NR UE in a downlink timeslot; Determine a minimum value of the NR downlink available bandwidth of the target NR UE in the Coreset resources based on the resources occupied by the NR PDCCH allocated to each NR UE in the first specified historical period, the average number of control channel elements CCE included, and the first continuous symbol number of the corresponding first historical Coreset resources; If it is determined that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources does not reach the set threshold, the resources occupied by the NR PDCCH are allocated to the target NR UE directly based on the minimum value and the target detection position.

6. The device according to claim 5, characterized in that Before determining the Coreset resources associated with the NR UE-specific search space, the processor is further configured to: Configure Coreset resources associated with the NR UE-specific search space; or, Based on high-level device notification, obtain the Coreset resources associated with the NR UE-specific search space configured by the high-level device.

7. The device according to claim 5, characterized in that Based on the detection capability of the target NR UE, a target detection position of the target NR UE is set in a downlink timeslot, and the processor is used to: In a downlink time slot, determine each candidate detection position, where each candidate detection position is located in a transmission interval between symbols occupied by a common control channel and a 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, a candidate detection position is selected from each candidate detection position and set as the target detection position of the target NR UE.

8. The device according to claim 5, characterized in that The processor is further configured to: If it is determined that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources reaches a set threshold, then the number of PRBs to be increased is further determined based on the preset CCE increase step size for the NR PDCCH used to schedule uplink resources and the second continuous symbol number of the corresponding second historical Coreset resources, and then based on the minimum value, the number of PRBs and the target detection position, the resources occupied by the NR PDCCH are allocated to the target NR UE.

9. A new radio interface NR physical downlink control channel PDCCH resource allocation device under spectrum sharing, characterized in that: include: A determination unit, configured to determine a control resource set Coreset resource associated with an NR user equipment UE exclusive search space, wherein the Coreset resource occupies the full bandwidth in the frequency domain, occupies non-first 3 symbols in a downlink time slot in the time domain and continues for N symbols, and does not conflict with a designated symbol, wherein N is a preset value, and the designated symbol includes: symbols occupied by a common control channel and a demodulated signal in an NR system and a long term evolution LTE system; A setting unit, configured to set a target detection position of the target NR UE in a downlink timeslot based on the detection capability of the target NR UE; An allocation unit, configured to determine a minimum value of the NR downlink available bandwidth of the target NR UE in the Coreset resources based on the resources occupied by the NR PDCCH allocated to each NR UE in the first specified historical period, the average number of control channel elements CCE included, and the first continuous symbol number of the corresponding first historical Coreset resources; If it is determined that within the second specified historical period, the number of resource allocation failures corresponding to the NR PDCCH used to schedule uplink resources does not reach the set threshold, the resources occupied by the NR PDCCH are allocated to the target NR UE directly based on the minimum value and the target detection position.

10. 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 perform the method according to any one of claims 1 to 4.

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